Zobrazeno 1 - 10
of 128
pro vyhledávání: '"Sampak Samanta"'
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 14, Iss 1, Pp 2771-2778 (2018)
An intriguing DABCO-catalyzed and DBU-promoted one-pot synthesis of an important class of (2-hydroxyaryl)pyridine derivatives bearing a carboxylate or a nitrile group suitably placed at C3 position of the aza-ring has been achieved in acceptable chem
Externí odkaz:
https://doaj.org/article/4acb644c8ed04e38a63d9644ec0dd3ff
Autor:
Sampak Samanta, Cong-Gui Zhao
Publikováno v:
ARKIVOC, Vol 2007, Iss 13, Pp 218-226 (2007)
Externí odkaz:
https://doaj.org/article/5f1ec06e72a446b9b65cbfa2b5548131
Publikováno v:
ARKIVOC, Vol 2005, Iss 3, Pp 44-50 (2004)
Externí odkaz:
https://doaj.org/article/45c6244b5a294c209cec2c46b24ffc54
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 3, Pp o569-o569 (2010)
In the title hydrate, C18H20BrO4P·H2O, a staggered conformation is found when the organic molecule is viewed down the central P—C bond, with the oxo and hydroxyl groups being diagonally opposite; each of the central P and C atoms has an S-configur
Externí odkaz:
https://doaj.org/article/66ee155bf57b40eea00a267689aecf46
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 1, Pp o98-o98 (2010)
In the title compound, C10H22NO6P, a staggered conformation is found when the molecule is viewed down the central P—C bond, with the oxo and hydroxy groups gauche to each other. The crystal structure features supramolecular chains of helical topolo
Externí odkaz:
https://doaj.org/article/b1b77244011847e5b4e779ca934f56c9
Publikováno v:
Acta Crystallographica Section E, Vol 66, Iss 1, Pp o99-o99 (2010)
In the title compound, C14H21FNO6P, a staggered conformation about the central P—C bond occurs, with the oxo and hydroxyl groups occupying diagonally opposite positions. The crystal structure features supramolecular chains mediated by O—H...O hyd
Externí odkaz:
https://doaj.org/article/c89c6626b7ee4adea4fe925448d5a6f7
Autor:
Meher Prakash, Sampak Samanta
Publikováno v:
Organic & Biomolecular Chemistry. 21:2001-2014
Excellent diastereoselective access to spirobenzo[b]oxepines via a [5 + 2] spirocyclization reaction of ortho-hydroxyacetophenones and 2-aroyl-1-chlorocyclopropanecarboxylates triggered by Cs2CO3 was developed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77ac0cb43fca3c22d12f4cc09039cda4
https://doi.org/10.1039/d3ob00077j
https://doi.org/10.1039/d3ob00077j
Publikováno v:
Synlett. 33:1052-1058
Remarkable organobase-controlled selective synthesis of a wide breadth of valuable 2,5-diaryl-4-nitrobenzoates and 1-hydroxy-4-oxocyclohexencarboxylates bearing a tetrasubstituted stereogenic carbon is reported. This one-pot cyclization reaction oper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f29cc42ea5d353b9cdde5ef972a5473d
https://doi.org/10.1055/a-1817-0882
https://doi.org/10.1055/a-1817-0882
Publikováno v:
Organic & Biomolecular Chemistry. 20:6445-6458
An interesting substrate-controlled domino approach to 2′,5′-dicyclopropoxy-1,1′:4′,1′′-teraryls and 6-hydroxypentafulvenes from a wide range of 1,2-diketones and 2-aroyl-1-chlorocyclopropanecarboxylates promoted by Cs2CO3 is reported.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11125c8412d0c7f4f8099791e3db08b8
https://doi.org/10.1039/d2ob00971d
https://doi.org/10.1039/d2ob00971d
Publikováno v:
Organic & Biomolecular Chemistry. 20:6759-6765
A metal-oxidant-solvent-free domino reaction of 3-chloropropiophenones, enolizable ketones and NH4OAc under an open atmosphere has been developed. This process generates a series of di- and trisubstituted pyridines regioselectively.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec6c5f0b23c3b86da23f8d640b849c62
https://doi.org/10.1039/d2ob01193j
https://doi.org/10.1039/d2ob01193j