Zobrazeno 1 - 10
of 127
pro vyhledávání: '"Miloslava Dandárová"'
Publikováno v:
ARKIVOC, Vol 2000, Iss 3, Pp 409-420 (2000)
Externí odkaz:
https://doaj.org/article/11aab17f4ab74e19856d7d4eb7c86c41
Publikováno v:
Chemistry of Heterocyclic Compounds. 37:1511-1517
Methyl 4-oxiranylmethyl-4H-furo[3,2-b]pyrrole-5-carboxylates 2a-c and methyl 1-oxiranylmethyl-1H-benzo[4,5]furo[3,2-b]pyrrole-2-carboxylate (2d) were prepared by reaction of the appropriate starting compounds 1a-d with excess chloromethyloxirane. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd69284a2b695ea5d1f7a5a0bbf688d3
https://doi.org/10.1023/a:1014557226260
https://doi.org/10.1023/a:1014557226260
Publikováno v:
ARKIVOC, Vol 2000, Iss 3, Pp 409-420 (2000)
The synthesis of methyl 4-(methoxymethyl)furo[3,2-b]pyrrole-5-carboxylate (1d) and methyl 2formyl-4-(methoxymethyl)furo[3,2-b]pyrrole-5-carboxylate (2d) is described. The effect of microwave irradiation on the condensation reactions of methyl 2-formy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afaf752d25fd839cda4f710b58e8df8e
https://www.arkat-usa.org/arkivoc-journal/browse-arkivoc/ark.5550190.0001.323
https://www.arkat-usa.org/arkivoc-journal/browse-arkivoc/ark.5550190.0001.323
Publikováno v:
Molecules
Volume 2
Issue 4
Pages 69-79
Molecules, Vol 2, Iss 4, Pp 69-79 (1997)
Volume 2
Issue 4
Pages 69-79
Molecules, Vol 2, Iss 4, Pp 69-79 (1997)
Methyl 6H-furo[2,3-b]pyrrole-5-carboxylate (2a) was prepared by thermolysis of the corresponding methyl 2-azido-3-(3-furyl)propenoate (1). 6-Methyl (2b) and 6-benzyl (2c) derivatives were obtained using phase-transfer catalysis conditions (PTC). The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e32861aa5aa4080f8ca8b29534610c0
https://doi.org/10.3390/20400069
https://doi.org/10.3390/20400069
Publikováno v:
Collection of Czechoslovak Chemical Communications. 62:1612-1622
5-Ethyl-8-hydrazinofuro[2',3':4,5]pyrrolo[1,2-d][1,2,4]triazine (4a) and its 2-methyl derivative 4b were prepared from 4H-furo[3,2-b]pyrrole-5-carbohydrazides 1a and 1b, respectively. Compounds 1a and 1b reacted with triethyl orthopropionate to give
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e2eb9a315766bb97ef0e30e499d231e
https://doi.org/10.1135/cccc19971612
https://doi.org/10.1135/cccc19971612
Publikováno v:
Collection of Czechoslovak Chemical Communications. 61:305-312
Some cyclization and cyclocondensation reactions of 1-(5-nitro-3-furoyl)-3-(4-R-phenyl)thioureas 1a-1e (R = H, CH3, N(C2H5)2, Br, CN) were conducted. 6-R-2-(5-Nitro-3-furoylamino)benzothiazoles 2a-2c (R = H, CH3, Br) were obtained by bromine-induced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8ca4dc615c5b42d039fed8032f939d6
https://doi.org/10.1135/cccc19960305
https://doi.org/10.1135/cccc19960305
Publikováno v:
Collection of Czechoslovak Chemical Communications. 61:921-929
Substituted 1-(6-methoxy-2-benzothiazolyl)-2-pyridones 5a-5f have been prepared from N-(6-methoxy-2-benzothiazolyl)cyanoacetamide (2) which on reactions with 4-substituted benzaldehydes gives 3-aryl-2-cyano-N-(6-methoxy-2-benzothiazolyl)-2-propenamid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e825d97850116c94fa11d5fa83d173b
https://doi.org/10.1135/cccc19960921
https://doi.org/10.1135/cccc19960921
Publikováno v:
Collection of Czechoslovak Chemical Communications. 60:709-714
The title compounds were prepareed by reaction of 1,2-dihydrofuro[2',3':4,5]pyrolo[1,2-d][1,2,4]-1-hydrazones by cyclization with triethyl orthoformiate or triethyl orthoacetate. All compounds were characterized by elemental analyses, UV and 1H NMR s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c774c2a8f98e4fcf93b7871c32941bc
https://doi.org/10.1135/cccc19950709
https://doi.org/10.1135/cccc19950709
Publikováno v:
Collection of Czechoslovak Chemical Communications. 59:2721-2726
4-Aryl-3-substituted furans IIIa - IIId were prepared by Diels Alder reaction of 4-phenyloxazole (I) with compounds IIa - IId, containing an activated triple bond, and subsequent thermal decomposition of the cycloadduct.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3167d14444d31e69c2dbad555aa06c0f
https://doi.org/10.1135/cccc19942721
https://doi.org/10.1135/cccc19942721
Publikováno v:
Collection of Czechoslovak Chemical Communications. 59:222-226
The paper describes the cyclization reactions of substituted 1-(4'-quinazolyl)-4-phenylthiosemicarbazides (Ia - Ie). The thermal intramolecular cyclization gives 2H-1,2,4-triazolo[4,3-c]quinazoline-3-thiones (IIa - IId). Heating of I with HgO gives 3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad76e0fb5f2806348cf0fddce48cdbff
https://doi.org/10.1135/cccc19940222
https://doi.org/10.1135/cccc19940222