X
Search Filters
Format Format
Subjects Subjects
Subjects Subjects
X
Sort by Item Count (A-Z)
Filter by Count
chemistry, multidisciplinary (24) 24
one-pot synthesis (21) 21
chemistry, organic (19) 19
derivatives (19) 19
densely functionalized 4h-chromenes (17) 17
efficient (15) 15
functionalized 4h-chromenes (14) 14
facile construction (12) 12
4h-chromenes (11) 11
catalysis (9) 9
efficient synthesis (8) 8
synthesis (8) 8
catalyst (7) 7
chemistry, applied (7) 7
chromenes (7) 7
multicomponent reactions (7) 7
chemistry (6) 6
ketones (6) 6
3-component synthesis (5) 5
aldehydes (5) 5
amines (5) 5
annulation (5) 5
green synthesis (5) 5
multicomponent synthesis (5) 5
organic-synthesis (5) 5
phenols (5) 5
selective synthesis (5) 5
solvent-free (5) 5
solvent-free conditions (5) 5
2h-chromenes (4) 4
analysis (4) 4
aqueous-media (4) 4
chemistry, physical (4) 4
cyclization (4) 4
enantioselective synthesis (4) 4
green chemistry (4) 4
heterocycles (4) 4
highly functionalized chromenes (4) 4
michael addition (4) 4
nanocatalyst (4) 4
physical chemistry (4) 4
salicyl n-tosylimines (4) 4
tandem reaction (4) 4
throughput screening assay (4) 4
water (4) 4
3 component reactions (3) 3
3-component reaction (3) 3
3-substituted indoles (3) 3
4-aryl-4h-chromenes (3) 3
acid (3) 3
agents (3) 3
antioxidant (3) 3
catalysts (3) 3
chemistry, medicinal (3) 3
combinatorial analysis (3) 3
combinatorial libraries (3) 3
discovery (3) 3
index medicus (3) 3
indoles (3) 3
ionic liquid (3) 3
l-proline (3) 3
molecular structure (3) 3
phase-transfer catalyst (3) 3
privileged structures (3) 3
reagents (3) 3
solvent-free synthesis (3) 3
titanomagnetite nanoparticles (3) 3
xanthenones (3) 3
xanthones (3) 3
1h-pyrazolo[1,2-b] phthalazine-5,10-dione (2) 2
2,3,4,9-tetrahydro-1h-xanthen-1-ones (2) 2
2-amino-4h-chromene derivatives (2) 2
3-component reactions (2) 2
4h-chromene (2) 2
4h-chromene derivatives (2) 2
alcohols (2) 2
amino-functionalized mcm-41 (2) 2
analytical chemistry (2) 2
apoptosis (2) 2
aqueous medium (2) 2
aqueous-medium (2) 2
aromatic compounds (2) 2
arylation (2) 2
asymmetric michael addition (2) 2
asymmetric-synthesis (2) 2
benzaldehyd (2) 2
benzaldehyde (2) 2
benzopyrans (2) 2
benzylation (2) 2
beta-cyclodextrin (2) 2
biological evaluation (2) 2
bromide (2) 2
carbon (2) 2
catalyzed synthesis (2) 2
chemical synthesis (2) 2
conjugated alkenes (2) 2
construction (2) 2
copper (2) 2
coumarin (2) 2
coumarins (2) 2
more...
Language Language
Publication Date Publication Date
Click on a bar to filter by decade
Slide to change publication date range


Tetrahedron Letters, ISSN 0040-4039, 06/2018, Volume 59, Issue 24, pp. 2347 - 2351
Journal Article
Angewandte Chemie International Edition, ISSN 1433-7851, 07/2014, Volume 53, Issue 30, pp. 7923 - 7927
We describe herein a catalytic, enantioselective process for the synthesis of 4H‐chromenes which are important structural elements of many natural products and... 
benzhydrylic alcohols | asymmetric synthesis | chromenes | xanthenones | chiral phosphoric acids | ASYMMETRIC CATALYSIS | ONE-POT SYNTHESIS | ANNULATION | FUNCTIONALIZED 4H-CHROMENES | BOND-FORMING REACTIONS | SALICYL N-TOSYLIMINES | CHEMISTRY, MULTIDISCIPLINARY | FACILE CONSTRUCTION | SELECTIVE SYNTHESIS | EFFICIENT
Journal Article
Synlett, ISSN 0936-5214, 07/2014, Volume 25, Issue 11, pp. 1571 - 1576
Abstract A simple and efficient method has been developed for the synthesis of 4 H -chromenes from o -hydroxybenzylic alcohols and dicarbonyl compounds... 
letter | supported reagents | ANNULATION | FUNCTIONALIZED 4H-CHROMENES | CHEMISTRY, ORGANIC | cyclizations | benzylations | ALCOHOLS | KETONES | chromenes | PHENOLS | FACILE CONSTRUCTION | one-pot syntheses | EFFICIENT | 2H-CHROMENES
Journal Article
Tetrahedron, ISSN 0040-4020, 11/2009, Volume 65, Issue 45, pp. 9152 - 9156
Journal Article
中国化学快报:英文版, ISSN 1001-8417, 2012, Volume 23, Issue 10, pp. 1129 - 1132
A Cu(I)-catalyzed one-pot tandem reaction of 2-bromobenzyl bromides with 1,3-dicarbonyl compounds leading to 4H- chromene derivatives has been developed. This... 
二羰基化合物 | 苄基 | Cu(Ⅰ) | 衍生物 | 苯并吡喃 | 溴化物 | 串联反应 | 铜催化 | Copper catalysis | 4H-Chromenes | One-pot tandem reaction | HIGHLY FUNCTIONALIZED CHROMENES | ORGANIC-SYNTHESIS | ARYLATION | SALICYL N-TOSYLIMINES | CHEMISTRY, MULTIDISCIPLINARY | KETONES | CASCADE PROCESS | DERIVATIVES | 2H-CHROMENES | CYCLIZATION
Journal Article
中国化学:英文版, ISSN 1001-604X, 2012, Volume 30, Issue 8, pp. 1709 - 1714
Journal Article
Tetrahedron Letters, ISSN 0040-4039, 02/2019, Volume 60, Issue 7, pp. 538 - 540
A strategically new approach to 9-substituted 2,3,4,9-tetrahydro-1 -xanthen-1-ones is described. The protocol includes TMG promoted, conjugate addition of... 
Michael addition | HWE olefination | Coumarins | 1,1,3,3-Tetramethylguanidine | Cyclohexane-1,3-diones | Tetrahydroxanthenones | PHLOROGLUCINOL | ONE-POT | FUNCTIONALIZED 4H-CHROMENES | CHEMISTRY, ORGANIC
Journal Article
The Journal of Organic Chemistry, ISSN 0022-3263, 11/2015, Volume 80, Issue 21, pp. 11048 - 11056
Cesium carbonate-mediated reaction of 2-hydroxybenzaldehydes and 2-bromoallyl sulfones afforded 2H- and 4H-chromenol derivatives endowed with a 3-arylsulfonyl... 
L-PROLINE | SALICYLIC ALDEHYDES | FUNCTIONALIZED 4H-CHROMENES | CATALYZED SYNTHESIS | THROUGHPUT SCREENING ASSAY | ALPHA,BETA-UNSATURATED ALDEHYDES | CHEMISTRY, ORGANIC | SELECTIVE SYNTHESIS | SUBSTITUTED 4H-CHROMENES | EFFICIENT | 2H-CHROMENES
Journal Article
The Journal of Organic Chemistry, ISSN 0022-3263, 03/2016, Volume 81, Issue 5, pp. 2062 - 2069
An efficient, environmentally friendly and one-pot route to new 9-aryl/9-arylethynyl-2,3,4,9-tetrahydro-1H-xanthen-1-one derivatives from inexpensive starting... 
CATALYSIS | DYES | EFFICIENT APPROACH | FUNCTIONALIZED 4H-CHROMENES | XANTHENE DERIVATIVES | AQUEOUS-MEDIA | CHEMISTRY, ORGANIC | CASCADE | 2,3,4,9-TETRAHYDRO-1H-XANTHEN-1-ONES | XANTHONES | CYCLIZATION | Usage | Amines | Iron compounds | Chemical properties | Ring formation (Chemistry)
Journal Article
New Journal of Chemistry, ISSN 1144-0546, 2017, Volume 41, Issue 17, pp. 9388 - 9396
A series of newly synthesized 4-(1H-indol-3-yl)-2-methyl-N-phenyl-4H-chromene-3-carboxamide derivatives were achieved by one-pot reaction between... 
ANTICANCER ACTIVITY | 3 COMPONENT REACTIONS | PHENOLS | FACILE CONSTRUCTION | DENSELY FUNCTIONALIZED 4H-CHROMENES | TANDEM REACTION | CATALYST | DERIVATIVES | EFFICIENT | CHEMISTRY, MULTIDISCIPLINARY | SOLVENT-FREE SYNTHESIS
Journal Article
RSC Adv, ISSN 2046-2069, 2014, Volume 4, Issue 26, pp. 13708 - 13718
A new concept of catalysts which are prepared from renewable materials is demonstrated. It is known that amino acids (e.g., proline and hydroxyproline) are... 
Journal Article
TETRAHEDRON LETTERS, ISSN 0040-4039, 01/2016, Volume 57, Issue 1, pp. 141 - 145
A facile and efficient method for the synthesis of 1-oxo-hexahydroxanthenes catalyzed by FeCl3 center dot 6H(2)O is described. The iron-catalyzed condensation... 
ACID | FUNCTIONALIZED 4H-CHROMENES | ORGANOCATALYST | CHEMISTRY, ORGANIC | AROMATIC-ALDEHYDES | Catalytic reactions | FeCl3 center dot 6HO | XANTHONES | Organic synthesis | 1-Oxo-hexahydroxanthenes | Green chemistry | DERIVATIVES | EFFICIENT | WATER
Journal Article
Tetrahedron Letters, ISSN 0040-4039, 01/2017, Volume 58, Issue 2, pp. 168 - 171
4 -Chromenes were synthesized from 2-bromobenzylidenemalonates and 1,3-dicarbonyls under mild and simple reaction conditions copper-catalysed domino reactions... 
Michael addition | Chromenes | Copper-catalysed domino reaction | Ullmann-type coupling | C(aryl)–O bond formation | FUNCTIONALIZED 4H-CHROMENES | PHOTOCHROMISM | CHEMISTRY, ORGANIC | C(aryL)-O bond formation | KETONES | COUPLING REACTIONS | SELECTIVE SYNTHESIS | EFFICIENT | DERIVATIVES | CYCLIZATION | Copper
Journal Article
RSC ADVANCES, ISSN 2046-2069, 2014, Volume 4, Issue 97, pp. 54168 - 54174
Different types of multicomponent reactions (MCRs) are reported using Bi2O3, BiVO4, and Bi2WO6 (nanoparticle) as heterogeneous catalysts. Among these, Bi2WO6... 
BISMUTH(III) COMPOUNDS | ORGANIC-SYNTHESIS | SOLVENT-FREE CONDITIONS | MANNICH-TYPE REACTION | ENANTIOSELECTIVE SYNTHESIS | HANTZSCH 1,4-DIHYDROPYRIDINES | 3-COMPONENT REACTION | EFFICIENT SYNTHESIS | DENSELY FUNCTIONALIZED 4H-CHROMENES | OXIDATIVE AROMATIZATION | CHEMISTRY, MULTIDISCIPLINARY
Journal Article
Journal Article