New synthetic approaches to condensed and spiro coumarins: coumarin-3-thiocarboxamide as building block for the synthesis of condensed and spiro coumarins
AMM El-Saghier, A Khodairy - … , Sulfur, and Silicon and the Related …, 2000 - Taylor & Francis
Abstract Coumarin-3-thiocarboxamide 1 was reacted with malononitrile, cyanoacetamide or
cyanothioacetamide to give the corresponding thiopyrano (3, 4-c) coumarin-1-carbonitrile 2 …
cyanothioacetamide to give the corresponding thiopyrano (3, 4-c) coumarin-1-carbonitrile 2 …
Preparation of New tert-Butyl Substituted Coumarins, Thiocoumarins and Dithiocoumarins
J Voss, R Edler, G Adiwidjaja - … , Sulfur, and Silicon and the Related …, 2007 - Taylor & Francis
6-tert-Butyl-4-methyl-and 6, 8-di-tert-butyl-4-methylcoumarin were prepared from tert-
butylphenols and diketene via the corresponding aryl acetoacetates. 6-tert-Butyl-4-methyl …
butylphenols and diketene via the corresponding aryl acetoacetates. 6-tert-Butyl-4-methyl …
4-Chloro-3-(trifluoroacetyl)-and 4-chloro-3-(methoxalyl) coumarins as novel and efficient building blocks for the regioselective synthesis of 3, 4-fused coumarins
VO Iaroshenko, F Erben, S Mkrtchyan, A Hakobyan… - Tetrahedron, 2011 - Elsevier
4-Chloro-3-(trifluoroacetyl)-and 4-chloro-3-(methoxalyl) coumarins react with electron-rich
aminoheterocycles, dimethyl 1, 3-acetonedicarboxylate, hydrazines, alkyl thioglycolates …
aminoheterocycles, dimethyl 1, 3-acetonedicarboxylate, hydrazines, alkyl thioglycolates …
Synthesis of methyl derivatives of linear and angular thienocoumarins and thiopyranocoumarins
P Rodighiero, G Pastorini, A Chilin… - Journal of heterocyclic …, 1998 - Wiley Online Library
New linear and angular thienocoumarins and thiopyranocoumarins were synthesized. The
key intermediates were appropriate methyl derivatives of 7‐mercaptocoumarin, which were …
key intermediates were appropriate methyl derivatives of 7‐mercaptocoumarin, which were …
A facile synthesis of some 3-(2-pyridyl) coumarins
DI Brahmbhatt, GB Raolji, SU Pandya, UR Pandya - 1999 - nopr.niscpr.res.in
®x, R, Page 1 Indian Journal of Chemistry Vol. 388, February 1999, pp 212 - 21S Note A facile
synthesis of some 3-(2-pyridyl)coumanns DI Brahmbhatt*, Gajeodra B Raolji, Shashi U Pandya …
synthesis of some 3-(2-pyridyl)coumanns DI Brahmbhatt*, Gajeodra B Raolji, Shashi U Pandya …
[Hydroxy (tosyloxy) iodo] benzene in Organic Synthesis: A Facile Synthesis of Furo [3, 2-c] coumarins Using α-Tosyloxyketones
O Prakash, D Wadhwa, K Hussain… - Synthetic …, 2012 - Taylor & Francis
Full article: [Hydroxy(tosyloxy)iodo]benzene in Organic Synthesis: A Facile Synthesis of Furo[3,2-c]coumarins
Using α-Tosyloxyketones Skip to Main Content Taylor and Francis Online homepage Taylor …
Using α-Tosyloxyketones Skip to Main Content Taylor and Francis Online homepage Taylor …
Synthesis and properties of 4-(3-aminothieno-[2,3-b]pyridin-2-yl)coumarins
SV Gorelov, SP Bondarenko, MS Frasinyuk - Chemistry of Heterocyclic …, 2012 - Springer
Substituted 4-[(3-cyanopyridin-2-yl) thiomethyl] coumarins have been synthesized by the
alkylation of 2-mercapto-4, 6-dimethylnicotinonitrile with 4-chloromethylcoumarins …
alkylation of 2-mercapto-4, 6-dimethylnicotinonitrile with 4-chloromethylcoumarins …
Synthesis of 6-and 7-alkoxy-4-methylcoumarins from corresponding hydroxy coumarins and their conversion into 6-and 7-alkoxy-4-formylcoumarin derivatives
V Ngoc Toan, N Dinh Thanh - Synthetic Communications, 2020 - Taylor & Francis
Abstract Hydroxy derivatives of 4-methyl-2 H-chromen-2-one were prepared from
hydroquinone and resorcinol through their reaction with ethyl acetoacetate. These hydroxy …
hydroquinone and resorcinol through their reaction with ethyl acetoacetate. These hydroxy …
New efficient synthesis of pyrido [2, 3-c] and pyrido [3, 2-c] coumarin derivatives
G Pave, P Chalard, MC Viaud-Massuard, Y Troin… - Synlett, 2003 - thieme-connect.com
Thieme E-Journals - Synlett / Full Text DE EN Home Products Journals Books Book Series
Service Library Service Help Contact Portal SYNLETT Full-text search Full-text search Author …
Service Library Service Help Contact Portal SYNLETT Full-text search Full-text search Author …
[PDF][PDF] A FACILE SYNTHESIS OF ISOCOUMARINO [3', 4': 4, 5] PYRROLO [3, 2-c]-COUMARINS FROM 4-AMINOCOUMARINS AND NINHYDRIN
T Zhou, DL Wang, GY Pan, JH Qian - Heterocycles, 2017 - triggered.stanford.clockss.org
An efficient method for the synthesis of novel isocoumarino-[3', 4': 4, 5] pyrrolo [3, 2-c]
coumarins was described. The construction of this new fused heterocycles system was …
coumarins was described. The construction of this new fused heterocycles system was …