Chiral terpene auxiliaries V: Synthesis of new chiral γ-hydroxyphosphine oxides derived from α-pinene
作者:Anna Kmieciak、Marek P Krzemiński
DOI:10.3762/bjoc.15.242
日期:——
New chiral regioisomeric γ-hydroxyphosphine ligands were synthesized from α-pinene. The key transformation was the thermal [2,3]-sigmatropic rearrangement of allyldiphenylphosphinites, obtained from (1R,2R,4S,5R)-3-methyleneneoisoverbanol and (1R,2R,3R,5R)-4-methyleneneoisopinocampheol, to allylphosphine oxides. Hydroxy groups were introduced stereoselectively through a hydroboration–oxidation reaction
从α-pine烯合成了新的手性区域异构体γ-羟基膦配体。关键的转化是从(1 R,2 R,4 S,5 R)-3-亚甲基新异芳醇和(1 R,2 R,3 R,5 R)获得的烯丙基二苯基次膦酸酯的[2,3]-σ热重排。-4-亚甲基新磺基樟脑酚,烯丙基膦氧化物。通过氢硼化-氧化反应从受阻较少的位点立体选择性地引入羟基,从而提供了羟基和膦取代基之间的反式关系。