Zobrazeno 1 - 10
of 11
pro vyhledávání: '"William Chrisman"'
Autor:
Atsuo Kuki, Kamil Lang, William Chrisman, Enugurthi Brahmachary, Demetrios Anglos, Sambasivarao Kotha, Bakthan Singaram
Publikováno v:
Scopus-Elsevier
A novel constrained 7-amino-6,7-dihydro-8H-cyclopenta[g]quinoxaline-7-carboxylic acid derivative was prepared starting from 4,5-dimethyl-o-phenylenediamine. (C) 1997 .
Autor:
Bakthan Singaram, William Chrisman, Dennis L. Hasha, Christian T. Goralski, Lawrence W. Nicholson, Philip R. Rudolf, Donald Zakett
Publikováno v:
Tetrahedron: Asymmetry. 8:3863-3871
The reaction of (1R,5S)-(+)-nopinone with secondary amines in cyclohexane with the azeoptropic removal of water afforded excellent yields of the correspondin enamines. Hydroboration of these enamines with BMS followed by methanolysis and oxidation wi
Autor:
Bakthan Singaram, William Chrisman
Publikováno v:
Tetrahedron Letters. 38:2053-2056
Swern oxidation of β-amino alcohols containing tertiary amino groups afforded the corresponding α-amino carbonyl compounds in fair to excellent yield. Yields were dependent on the steric requirement of the amine base used for the reaction and were
Autor:
William Chrisman, Lawrence Y. Lee, Sally A. Bickford, Bakthan Singaram, Clifford E. Harris, Antonia E. Torreblanca
Publikováno v:
Tetrahedron Letters. 38:981-984
Treatment of β,β-disubstituted enamines with potassium permanganste supported on neutral alumina leads to a mild and selective oxidative cleavage reaction which produces ketones and formamides. The ketones can be isolated in high yield and purity b
Publikováno v:
Tetrahedron Letters. 42:4775-4777
Ketoximes are converted to the parent ketones in good yields when treated with potassium permanganate supported on neutral alumina (ASPP). An optimized procedure has been developed, the simple work-up minimizes loss of product and oximes have been se
ChemInform Abstract: The Effect of Different Amine Bases in the Swern Oxidation of β- Amino Alcohols
Autor:
Bakthan Singaram, William Chrisman
Publikováno v:
ChemInform. 28
Swern oxidation of β-amino alcohols containing tertiary amino groups afforded the corresponding α-amino carbonyl compounds in fair to excellent yield. Yields were dependent on the steric requirement of the amine base used for the reaction and were
Autor:
William Chrisman, S. A. Bickford, Bakthan Singaram, Lawrence Lee, Clifford E. Harris, A. E. Torreblanca
Publikováno v:
ChemInform. 28
Autor:
Bakthan Singaram, Kamil Lang, Enugurthi Brahmachary, William Chrisman, Sambasivarao Kotha, Atsuo Kuki, Demetrios Anglos
Publikováno v:
ChemInform. 29
A novel constrained 7-amino-6,7-dihydro-8H-cyclopenta[g]quinoxaline-7-carboxylic acid derivative was prepared starting from 4,5-dimethyl-o-phenylenediamine.
Autor:
L. W. Nicholson, Bakthan Singaram, Philip R. Rudolf, D. L. Hasha, D. Zakett, William Chrisman, C. T. Goralski
Publikováno v:
ChemInform. 29
Publikováno v:
ChemInform. 32
Ketoximes are converted to the parent ketones in good yields when treated with potassium permanganate supported on neutral alumina (ASPP). An optimized procedure has been developed, the simple work-up minimizes loss of product and oximes have been se