O-tert-Butyl-N-(chloromethyl)-N-methyl carbamate as a source of the MeNHCH2− synthon
作者:Albert Guijarro、Javier Ortiz、Miguel Yus
DOI:10.1016/0040-4039(96)01134-3
日期:1996.7
The reaction of O-tert-butyl-N-(chloromethyl)-N-methyl carbamate (1) with lithium powder and a catalytic amount of DTBB (2.5 mol %) in the presence of different electrophiles [Me3SiCl, BuiCHO, ButCHO, PhCHO, (CH2)4CO, Et2CO, PhCOMe, Ph2CO] in THF at −78°C leads, after hydrolysis with water, to the expected functionalised carbamates 2. As an example, the hydrolysis of compound 2e with hydrogen chloride
所述的反应ö -叔丁基- ñ - (氯甲基) - ñ -甲基氨基甲酸叔丁酯(1与锂粉末和DTBB催化量(2.5摩尔%)在不同的亲电子试剂的存在下)[我3的SiCl,卜我CHO卜吨CHO,苯甲醛,(CH 2)4 CO。,等2 CO,PhCOMe中,Ph 2 ]在THF CO在-78℃下引线,与水水解后,与预期的官能化氨基甲酸酯2。例如,化合物2e的水解与氯化氢一起使用可容易地使胺官能团脱保护,得到相应的1,2-氨基醇3e。