Synthesis of Pyrazoles from 1,3-Diols via Hydrogen Transfer Catalysis
摘要:
1,3-Diols engage in ruthenium-catalyzed hydrogen transfer in the presence of alkyl hydrazines to provide 1,4-disubstituted pyrazoles. Regioselective synthesis of unsymmetrical pyrazoles from beta-hydroxy ketones is also described.
Synthesis of Pyrazoles from 1,3-Diols via Hydrogen Transfer Catalysis
作者:Daniel C. Schmitt、Alexandria P. Taylor、Andrew C. Flick、Robert E. Kyne
DOI:10.1021/acs.orglett.5b00266
日期:2015.3.20
1,3-Diols engage in ruthenium-catalyzed hydrogen transfer in the presence of alkyl hydrazines to provide 1,4-disubstituted pyrazoles. Regioselective synthesis of unsymmetrical pyrazoles from beta-hydroxy ketones is also described.
Isobe, Kimiaki; Mohri, Kunihiko; Sano, Hiromichi, Chemical and pharmaceutical bulletin, 1986, vol. 34, # 7, p. 3029 - 3032