Yadav J S, Subba Reddy B V
Organic Chemistry Division-I, Indian Institute of Chemical Technology, Hyderabad, India.
Carbohydr Res. 2000 Dec 1;329(4):885-8. doi: 10.1016/s0008-6215(00)00241-x.
Trityl ethers are selectively deprotected to the corresponding alcohols in high yields by CBr4 in refluxing methanol under neutral reaction conditions. Other hydroxyl protecting groups like isopropylidene, allyl, benzyl, acetyl, benzoyl, methyl, tosyl, prenyl, propargyl, tert-butyldiphenylsilyl and p-methoxybenzyl ethers are unaffected.
在中性反应条件下,于回流的甲醇中,四溴化碳可将三苯甲基醚选择性地脱保护为相应的醇,产率很高。其他羟基保护基团,如亚异丙基、烯丙基、苄基、乙酰基、苯甲酰基、甲基、对甲苯磺酰基、异戊二烯基、炔丙基、叔丁基二苯基甲硅烷基和对甲氧基苄基醚均不受影响。