Synthetic applications of 2-chlorooxiranes: preparation of thiazoles, dihydrothiazoles and selenazoles
作者:Johann Gasteiger、Christian Herzig
DOI:10.1016/s0040-4020(01)98964-1
日期:1981.1
thioamides and thioureas provides access to thiazoles, 4-hydroxy-4,5-dihydrothiazoles and 2-imino-2,3-dihydrothiazoles under mild conditions and with excellent yields. With 1 and selenourea, near quantitative yields of selenazoles are obtained.
2-
氯代
肟基1与
硫酰胺和
硫脲的反应可在温和条件下以高收率获得
噻唑,
4-羟基-4,5-二氢
噻唑和2-亚
氨基-
2,3-二氢噻唑。使用1和
硒代
脲,
硒代唑的收率接近定量。