Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Pham, Bao"'
Autor:
Taek Hyeon Kim, Quynh Pham Bao Nguyen
Publikováno v:
Beilstein Journal of Organic Chemistry
Beilstein Journal of Organic Chemistry, Vol 9, Iss 1, Pp 2113-2119 (2013)
Beilstein Journal of Organic Chemistry, Vol 9, Iss 1, Pp 2113-2119 (2013)
Asymmetric alkylation reactions using non-cross-linked polystyrene (NCPS)-supported 2-imidazolidinone chiral auxiliaries were successfully investigated with excellent diastereocontrol (>99% de). The recovery and the recycling of this soluble polymer-
Publikováno v:
Bulletin of the Korean Chemical Society. 32:4133-4136
E-mail: thkim@chonnam.ac.krReceived September 11, 2011, Accepted September 25, 2011Key Words : Chiral auxiliary, Asymmetric alkylation, Bis(2-amino-2-oxazolines)Chiral auxiliary-derived asymmetric alkylations have beenextensively studied and are now
Publikováno v:
Tetrahedron Letters. 50:4015-4018
A novel solid supported 2-imidazolidinone chiral auxiliary was prepared from O-benzyl- l -tyrosine and Wang resin. Asymmetric alkylation reactions in the solid phase proceeded with excellent stereoselectivities, which were even higher than those obse
Publikováno v:
Tetrahedron Letters. 48:7834-7837
The novel chiral auxiliaries, 5,5-diphenyl-2-phenylamino-2-oxazoline and 5,5-dimethyl-2-phenylamino-2-oxazoline, were prepared from l -valine methyl ester. The 5,5-dimethyl compound was shown to be a particularly effective chiral auxiliary for asymme
Autor:
Taek Hyeon Kim, Quynh Pham Bao Nguyen
Publikováno v:
Bulletin of the Korean Chemical Society. 30:2935-2937
was used to explore the asymmetric glycolate alkylation reactions in the solid phase under several reaction conditions (Scheme 2 and Table 1). The stereoselecti-vites were examined at the stage of the chiral benzyl-protected α-hydroxy alcohol produc
Publikováno v:
ChemInform. 39
The novel chiral auxiliaries, 5,5-diphenyl-2-phenylamino-2-oxazoline and 5,5-dimethyl-2-phenylamino-2-oxazoline, were prepared from l -valine methyl ester. The 5,5-dimethyl compound was shown to be a particularly effective chiral auxiliary for asymme
Publikováno v:
Tetrahedron Letters: International Organ for the Rapid Publication of Preliminary Communications in Organic Chemistry. Jul2009, Vol. 50 Issue 28, p4015-4018. 4p.
Autor:
Le, Thanh Nguyen1, Nguyen, Quynh Pham Bao1, Kim, Jae Nyoung2, Kim, Taek Hyeon1 thkim@chonnam.ac.kr
Publikováno v:
Tetrahedron Letters: International Organ for the Rapid Publication of Preliminary Communications in Organic Chemistry. Oct2007, Vol. 48 Issue 44, p7834-7837. 4p.