Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Riki Das"'
Publikováno v:
Synthesis. 51:2515-2522
A unique approach to achieve regioselective C(3)–H olefination of isoquinolines under ruthenium-catalyzed conditions has been developed. The acetyl group of N-acetyl-1,2-dihydroisoquinoline acts as a directing group for this C–H olefination strat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d8d695123d7c469f2d3245c13dd4a45
https://doi.org/10.1055/s-0037-1611807
https://doi.org/10.1055/s-0037-1611807
Autor:
Riki Das, Manmohan Kapur
Publikováno v:
Asian Journal of Organic Chemistry. 7:1217-1235
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e570cbbd1667b6168ff562f153c2fac8
https://doi.org/10.1002/ajoc.201800204
https://doi.org/10.1002/ajoc.201800204
Autor:
Manmohan Kapur, Riki Das
Publikováno v:
Asian Journal of Organic Chemistry. 7:1524-1541
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a7a987af61a620fb892eaeed2c9b1cd
https://doi.org/10.1002/ajoc.201800142
https://doi.org/10.1002/ajoc.201800142
Publikováno v:
European Journal of Organic Chemistry. 2017:5439-5459
Site selectivity is an inherent challenge in C–H functionalization reactions. The most intensively sought-after approaches have involved the employment of Lewis-basic coordinating groups to direct a metal to a proximal site, in the process generati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03b9ddd97b8068655ffa52b6b404cae0
https://doi.org/10.1002/ejoc.201700546
https://doi.org/10.1002/ejoc.201700546
Autor:
Manmohan Kapur, Riki Das
Publikováno v:
The Journal of Organic Chemistry. 82:1114-1126
A palladium-catalyzed, ortho-selective C–H halogenation methodology is reported herein. The highlight of the work is the highly selective C(sp2)–H functionalization of benzyl nitriles in the presence of activated C(sp3)–H bond, which results in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fffa3703a866344abdeabb5d5c567baf
https://doi.org/10.1021/acs.joc.6b02731
https://doi.org/10.1021/acs.joc.6b02731
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 26(4)
A unique approach to achieve site-selective C-H olefinations exclusively at the C-3- or C-8-positions in the quinoline framework has been developed by catalyst control. Distal C(3)-H functionalization is achieved by using palladium catalysis, whereas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b13c6370f8e4193dc18552c223e7724f
https://pubmed.ncbi.nlm.nih.gov/31625636
https://pubmed.ncbi.nlm.nih.gov/31625636
Autor:
Manmohan Kapur, Riki Das
Publikováno v:
Chemistry - A European Journal. 22:16986-16990
A new class of Weinreb amides has been developed as directing groups for the ruthenium-catalysed regioselective oxidative C-H olefination. The new Weinreb amides successfully inhibit the N-O bond reductive cleavage usually associated with the cationi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4700dc81da71d134d974de651477ba88
https://doi.org/10.1002/chem.201603126
https://doi.org/10.1002/chem.201603126
Publikováno v:
Organic Letters. 15:3310-3313
A new approach for the regioselective functionalization of the C-3-position of quinolines is described. The method utilizes heteroatom guided regioselective C-3 palladation followed by arylation via transmetalation with aryl boronic acids to yield 3-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d990f86c5867884e8813e05e49e8654
https://doi.org/10.1021/ol401349a
https://doi.org/10.1021/ol401349a
Autor:
Riki Das, Manmohan Kapur
Publikováno v:
ChemInform. 46
The ruthenium-catalyzed Fujiwara-Moritani reaction (oxidative-Heck reaction) of Weinreb amides is reported herein. The reaction affords exclusively ortho-C-H olefination products, has excellent substrate scope and tolerates halogen functionalities, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4b681ccbf902310b7f3ade579e598cbe
https://doi.org/10.1002/chin.201552048
https://doi.org/10.1002/chin.201552048
Autor:
Manmohan Kapur, Riki Das
Publikováno v:
Chemistry, an Asian journal. 10(7)
The ruthenium-catalyzed Fujiwara-Moritani reaction (oxidative-Heck reaction) of Weinreb amides is reported herein. The reaction affords exclusively ortho-C-H olefination products, has excellent substrate scope and tolerates halogen functionalities, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6dac4b15ba81200f39def52e785d6bf0
https://pubmed.ncbi.nlm.nih.gov/26033965
https://pubmed.ncbi.nlm.nih.gov/26033965