856899-98-4Relevant articles and documents
Asymmetric transfer hydrogenation of α-azido acrylates
Ji, Yang,Xue, Ping,Ma, Dan-Dan,Li, Xue-Qiang,Gu, Peiming,Li, Rui
supporting information, p. 192 - 194 (2015/02/05)
The asymmetric transfer hydrogenation of α-azido acrylates has been explored, a range of α-hydroxy esters are produced with good enantioselectivities (80-90% ee). The reaction was conducted in the wet HCO2H/NEt3 with Ru-TsDPEN A.
Synthesis of unit-B of cryptophycin-24 via Sharpless asymmetric dihydroxylation
Borah, Arun Jyoti,Goswami, Progyashree,Barua, Nabin C.,Phukan, Prodeep
supporting information, p. 7128 - 7130 (2013/01/15)
A synthetic pathway for the synthesis of unit-B of cryptophycin-24 has been developed using Sharpless asymmetric dihydroxylation as the key step. This study shows that direct azidation of α-hydroxy acid ester using diphenylphosphoryl azide is beneficial to asymmetric synthesis of α-amino acid without the loss of chirality during the transformation.
Unusual migrations and cyclization in the preparation of β-azido alcohols from β-hydroxy esters
Madhusudhan,Om Reddy,Ramanatham,Dubey
, p. 2719 - 2723 (2007/10/03)
Migration of TBDMS and Boc groups from 2° alcohols to 1° alcohols during the reduction of β-hydroxy esters has been observed. Also, unusual cyclization has been noticed during tosylation of benzylic alcohol in tert-butyl ((2R)-2-hydroxy-2-phenyl ethyl)car