N-(1,3,4-Thiadiazin-2-yl)-2,6-dialkoxybenzamide derivatives useful as herbicides.
N-(1,3,4-噻二唑基)-2,6-二烷氧基苯甲酰胺衍生物可用作除草剂。
A convenient synthesis of 4-ethyl-4-methyl-3-oxohexanenitrile via pinacol rearrangement
作者:Michael J. Martinelli、Vien V. Khau、Linus M. Horcher
DOI:10.1021/jo00072a048
日期:1993.9
US4436549A
申请人:——
公开号:US4436549A
公开(公告)日:1984-03-13
A Novel Synthesis of 3-Aryl-5-tert-butyl-4-oxazolin-2-ones.
作者:Noriaki KUDO、Misa TANIGUCHI、Kazuo SATO
DOI:10.1248/cpb.44.699
日期:——
An efficient synthetic method for 3-aryl-5-butyl-4-oxazolin-2-ones (6) is described. The reaction of ethyl N-arylcarbamates (10) with 1-bromo-3, 3-dimethyl-2-butanone (9a) or 1-bromo-3-ethyl-3-methyl-2-pentanone (9b) using 2.2 eq of lithium bis(trimethylsilyl)amide afforded 6 in good yields. The reaction mechanisms are discussed.