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science & technology (10) 10
intramolecular (9) 9
intramolecular photocycloaddition (9) 9
photocycloaddition (9) 9
physical sciences (8) 8
chemistry (7) 7
chemistry, physical (5) 5
photochemistry (5) 5
fluorescence (4) 4
synthesis (4) 4
cycloaddition (3) 3
intramolecular [2+2] photocycloaddition (3) 3
organic chemistry (3) 3
[6 + 4] tropone dimerization (2) 2
animals (2) 2
conformation (2) 2
cyclization (2) 2
derivatives (2) 2
diene enone [4 + 2] photocycloaddition, intramolecular (2) 2
intramolecular metal catalysis (2) 2
intramolecular photocyclization (2) 2
life sciences & biomedicine (2) 2
organic compounds (2) 2
oxanorbornadiene → oxepine isomerization, limitations (2) 2
oxaquadricyclanes, x‐ray structure, thermolysis (2) 2
oxazole (2) 2
pharmacology & pharmacy (2) 2
reactions (2) 2
regioselectivity (2) 2
stereoselectivity (2) 2
using (2) 2
x-ray (2) 2
-incarvilline (1) 1
1- pyridin-2 (1) 1
1-acetoxy-2-cyclopentene (1) 1
1-methylbicyclo [5.4.0] undec-3-en-8-one (1) 1
1-methylbicyclo[5.4.0]undec-3-en-8-one (1) 1
2 (1) 1
2 + 2 photocycloaddition intramolecular photoaddition (1) 1
2 + 2-cycloaddition - regioselectivity of intramolecular 2 + 2-photocycloaddition of 1,3-divinyl-2-cyclopentyl tetronate (1) 1
2 + 2‐cycloaddition ‐ regioselectivity of intramolecular 2 + 2‐photocycloaddition of 1,3‐divinyl‐2‐cyclopentyl tetronate (1) 1
2 + 4-cycloaddition - applications of diels-alder strategy in target-oriented synthesis of complex molecular skeletons (1) 1
2 + 4‐cycloaddition ‐ applications of diels–alder strategy in target‐oriented synthesis of complex molecular skeletons (1) 1
2+2 (1) 1
2-alkenyloxymethyl (1) 1
2-cyclopropylidene-2-arylethanols (1) 1
2-isoquinolin-l (1) 1
2-pyridone (1) 1
2.n (1) 1
2h-chromen-2-one;intramolecular (1) 1
2‐cyclopropylidene‐2‐arylethanols (1) 1
3,6-diazatetraasterane (1) 1
3-benzylprop-1-enes (1) 1
3-oxabicyclo[3.2.0]heptanes (1) 1
3‐oxabicyclo[3.2.0]heptanes (1) 1
4 (1) 1
4,6-dimethoxypyridin-2-one (1) 1
4-phenoxybut-1-enes (1) 1
5-nor stemmadenine alkaloid (1) 1
6-acetoxytricyclo[4.3.1 (1) 1
7-acetoxytricyclo [5. 3. 01, 5] decan-2-one (1) 1
7-acetoxytricyclo[5.3.0 (1) 1
[2 + 2] cycloaddition, intramolecular (1) 1
[2 + 2] photocycloaddition (1) 1
[2+2]photocycloaddition (1) 1
[3+2]-cycloaddition (1) 1
[3+2]‐cycloaddition (1) 1
absolute configuration (1) 1
addition reactions - cycloaddition (1) 1
addition reactions ‐ cycloaddition (1) 1
addition-reaction (1) 1
additionsreaktion (1) 1
aglaia - chemistry (1) 1
aglaia - metabolism (1) 1
aldehydes (1) 1
alkaloids (1) 1
alkaloids -- synthesis (1) 1
alkaloids synthesis (1) 1
alkenes (1) 1
alkylideneallyl cations - from alkylidenecyclopropanone acetals (1) 1
alkylideneallyl cations ‐ from alkylidenecyclopropanone acetals (1) 1
allene (1) 1
allyl/benzyl alcohol mcmurry coupling (1) 1
aminating agent (1) 1
analysis (1) 1
annelation (1) 1
anthracene (1) 1
antimalarial agent (1) 1
antimalarials (1) 1
antimalarials - chemical synthesis (1) 1
antimalarials - chemistry (1) 1
application (1) 1
aromatic compounds -- synthesis (1) 1
aromatic compounds synthesis (1) 1
aromatization (1) 1
asymmetric synthesis (1) 1
azabicyclohexane (1) 1
benzobicyclo[3.2.1]octadienes (1) 1
benzofurans - chemistry (1) 1
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Journal of photochemistry and photobiology. A, Chemistry., ISSN 1010-6030, 12/2016, Volume 331, pp. 102 - 109
Journal Article
Bulletin of the Chemical Society of Japan, ISSN 0009-2673, 6/2007, Volume 80, Issue 6, pp. 1157 - 1161
Intramolecular [2+2] and [2+3] photocycloadditions of 2-(2-alkenyloxymethyl)naphthalene-1-carbonitriles and their photocycloreversion using glass-made... 
Journal Article
Tetrahedron, ISSN 0040-4020, 02/2018, Volume 74, Issue 5, pp. 529 - 534
Conventional photocycloaddition of 1,4-dihydropyridines does not afford novel head-to-head 3,6-diazatetraasteranes... 
Intramolecular photodimerization | Region-chemical selectivity | 3,6-Diazatetraasterane | [2 + 2] Photocycloaddition | Photochemistry | [2 + 2] Photocycloaddition
Journal Article
European journal of organic chemistry, ISSN 1434-193X, 01/2018, Volume 2018, Issue 4, pp. 515 - 524
.... Aldehydes were synthesized by using several synthetic approaches. By applying intramolecular photocycloaddition, 2‐methyl‐4‐(2‐vinylstyryl... 
Vinylstyryl | Oxazoline | Intramolecular photocycloaddition | Photochemistry | Oxazoles | Analysis | Formaldehyde | Substitutes | Cycloaddition | Oxazole | Derivatives | Aldehydes | Chemical synthesis | Stilbene
Journal Article
Synthesis, ISSN 0039-7881, 6/2001, Volume 112, Issue 8, pp. 1197 - 1202
...) 3 in benzene site-selectively afforded the (2π + 2π) intramolecular photocycloadduct at the 1,2-position on the naphthalene ring... 
paper | Cycloreversion | Cycloadditions | Site-selectivity | Intramolecular photoadditions | Photochemistry
Journal Article
Synthesis, ISSN 0039-7881, 6/2001, Volume 112, Issue 8, pp. 1143 - 1148
Abstract The intramolecular [2+2] photocycloaddition of α,β-butenolides to a terminal double bond tethered to the lactone through the γ... 
paper | Intramolecular photochemical cycloaddition | Alkenes | Regioselectivity | α,β-Butenolides | Intermediate diradicals
Journal Article
Synlett, ISSN 0936-5214, 1999, Issue 7, pp. 1091 - 1093
Journal Article
Tetrahedron letters, ISSN 0040-4039, 2006, Volume 47, Issue 45, pp. 7865 - 7869
Intramolecular (2+2) photocycloaddition of β-stilbazoles tethered by silyl chains took place with high efficiency... 
Stilbazolium | Silyl chain | Dicarboxylic acid | Intramolecular photocycloaddition | β-Stilbazole
Journal Article
Heterocycles, ISSN 0385-5414, 05/1999, Volume 51, Issue 5, pp. 1059 - 1065
Journal Article
Beilstein journal of organic chemistry, ISSN 1860-5397, 09/2014, Volume 10, Issue 1, pp. 2222 - 2229
Novel / -4- and / -5-(2-vinylstyryl)oxazoles have been synthesized by Wittig reactions from the diphosphonium salt of α,α’- -xylene dibromide, formaldehyde and... 
Physical Sciences | Chemistry | Chemistry, Organic | Science & Technology | intramolecular photocycloaddition | styryl | vinyl | bicyclo[3.2.1]octane | oxazole
Journal Article
.... The novel tandem intramolecular photocycloaddition- retro-Mannich (TIPCARM) sequence leads to a spiropyrrolidine which is poised to undergo a second retro-Mannich fragmentation [TIPCA(RM)₂... 
Oxindole | Alkaloids -- Synthesis | Intramolecular Photocycloaddition | Organic photochemistry | retro-Mannich Fragmentation | Natural products -- Synthesis | Indole | Mannich reaction | Heterocyclic compounds -- Synthesis | Indole -- Synthesis | Aromatic compounds -- Synthesis | Ring formation (Chemistry)
Dissertation
Journal of molecular structure, ISSN 0022-2860, 09/2018, Volume 1168, pp. 165 - 174
...]octadiene skeleton by intramolecular [2+2]-photocycloaddition reaction. Numerous compounds with the bicyclo[3.2.l... 
Physico-chemical and ADME properties | Functionalized polycyclic skeleton | Intramolecular photocycloaddition | Benzobicyclo[3.2.1]octadienes | Continuous flow photochemistry
Journal Article
2018, ISBN 9780128149591
This chapter describes the stereochemistry of cycloaddition reactions with respect to [4+2] and [2+2] cycloadditions. The [4+2... 
Stereoselectivity | Transition metal alkylidene | Cycloaddition | Ketene | Asymmetric synthesis | Photocycloaddition | Allene | Stereospecificity | Singlet vinyl carbene | Intramolecular
Book Chapter
Chemical & pharmaceutical bulletin, ISSN 0009-2363, 1985, Volume 33, Issue 6, pp. 2594 - 2597
A five step synthesis including highly regioselective intramolecular [2+2] photocycloaddition of 1-acetoxy-2-(hex-5-enoyl... 
1-methylbicyclo [5.4.0] undec-3-en-8-one | intramolecular [2+2] photocycloaddition | 1-methylbicyclo[5.4.0]undec-3-en-8-one | bicyclo[5.4.0]undec-3-en-8-one | retro- and re-aldolization | Grob fragmentation
Journal Article
Liebigs Annalen, ISSN 0947-3440, 01/1996, Volume 1996, Issue 1, pp. 117 - 120
...‐hydrogen atom ion by the excited thiocarbonyl sulfur. Irradiation of 2‐allylindane‐1‐thiones 4e–h afforded the multifused thietanes 7e... 
Thioketones | [2 + 2] Cycloaddition, intramolecular | Fused thietanes | Photochemistry
Journal Article
Tetrahedron letters, ISSN 0040-4039, 2005, Volume 46, Issue 13, pp. 2327 - 2329
[Display omitted] An enantioselective synthesis of (−)-incarvilline is presented, employing a three-component coupling reaction and an intramolecular enone–olefin [2+2... 
Intramolecular [2+2] photocycloaddition | Three-component coupling | Cyclobutane ring opening | (−)-Incarvilline | (-)-Incarvilline
Journal Article
Zeitschrift für Naturforschung B, ISSN 0932-0776, 05/1983, Volume 38, Issue 5, pp. 648 - 654
A tricyclic 1,1,1-tricarbonyl-2,3,1-diazaferrole derivative (1) reacts photochemically with 1,3-dienes with formation of [4 + 2]-cycloadducts... 
Photocycloaddition | X-Ray | Intramolecular Metal Catalysis
Journal Article
12/2007, ISBN 0470712384, 34
This chapter contains sections titled: 2 + 2‐Cycloaddition 2 + 3‐Cycloaddition 2 + 4‐Cycloaddition Miscellaneous Cycloadditions References 
chemoselectivity in Michael–Dieckmann‐type reactions of 2‐acylaminoacrylates with ketene diethyl acetal | 2 + 4‐cycloaddition ‐ applications of Diels–Alder strategy in target‐oriented synthesis of complex molecular skeletons | minimum electrophilicity principle (MEP) ‐ predicting most stable stereoisomer in Paternó–Büchi photocycloaddition formation of oxetanes | Pauson–Khand reactions ‐ for cyclopentenone construction | addition reactions ‐ cycloaddition | Woodward–Hoffmann and Salem–Houk secondary orbital interactions and Cieplak‐type hyperconjugative effects | specific reactivity and selectivity of 1‐oxygenated dienes ‐ in Diels–Alder cycloadditions | tunable UV lasers, optimizing intramolecular 5 + 2‐photocycloaddition of maleimides | alkylideneallyl cations ‐ from alkylidenecyclopropanone acetals | 2 + 2‐cycloaddition ‐ regioselectivity of intramolecular 2 + 2‐photocycloaddition of 1,3‐divinyl‐2‐cyclopentyl tetronate | Specific reactivity and selectivity of 1-oxygenated dienes - in Diels-Alder cycloadditions | 2 + 4-cycloaddition - applications of Diels-Alder strategy in target-oriented synthesis of complex molecular skeletons | 2 + 2-cycloaddition - regioselectivity of intramolecular 2 + 2-photocycloaddition of 1,3-divinyl-2-cyclopentyl tetronate | Minimum electrophilicity principle (MEP) - predicting most stable stereoisomer in Paternó-Büchi photocycloaddition formation of oxetanes | Woodward-Hoffmann and Salem-Houk secondary orbital interactions and Cieplak-type hyperconjugative effects | Addition reactions - cycloaddition | Alkylideneallyl cations - from alkylidenecyclopropanone acetals | Tunable UV lasers, optimizing intramolecular 5 + 2-photocycloaddition of maleimides | Chemoselectivity in Michael-Dieckmann-type reactions of 2-acylaminoacrylates with ketene diethyl acetal | Pauson-Khand reactions - for cyclopentenone construction
Book Chapter
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