Synthesis of 1,4-amino alcohols by Grignard reagent addition to THF and N-tosyliminobenzyliodinane
作者:Ciputra Tejo、Yang Feng Anders See、Mitch Mathiew、Philip Wai Hong Chan
DOI:10.1039/c5ob02302e
日期:——
4-amino alcohols from THF treated with N-tosyliminobenzyliodinane (PhINTs) followed by a Grignard reagent under mild reaction conditions at room temperature is described herein. Various Grignard reagents were shown to be compatible, furnishing the corresponding 4-substituted-N-1,4-tosylamino alcohols in good to excellent yields. A partial or full detosylation of the N-tosyl-1,4-amino alcohol was observed
本文描述了在室温下在温和的反应条件下,先用N-甲苯磺酰亚胺基苄基碘丁烷(PhINTs)然后用格氏试剂处理的THF合成1,4-氨基醇。已显示各种格氏试剂是相容的,以良好至优异的产率提供了相应的4-取代的-N -1,4-甲苯磺酰基氨基醇。在涉及空间庞大的格氏试剂的情况下,观察到N-甲苯磺酰基-1,4-氨基醇的部分或全部脱甲苯基化,导致以中等至良好的产率脱保护的1,4-氨基醇产物。该协议的合成实用性通过5-取代-N的合成得到证明。-由THP得到的1-甲苯磺酰基-1,5-氨基醇,并将两个实施例转化为其相应的γ-内酰胺和吡咯烷加合物。