Selective Preparation of Benzyltitanium Compounds by the Metalative Reppe Reaction. Its Application to the First Synthesis of Alcyopterosin A
作者:Ryoichi Tanaka、Yoshitaka Nakano、Daisuke Suzuki、Hirokazu Urabe、Fumie Sato
DOI:10.1021/ja027008o
日期:2002.8.1
divalent titanium alkoxide reagent, Ti(O-i-Pr)4/2 i-PrMgCl, reacted with propargyl bromide to give directly benzyltitanium compounds. The resultant benzyltitanium compounds underwent deuteriolysis, iodinolysis (with I2), or oxygenation (with O2 gas) to give the corresponding deuterium-labeled compounds, iodides, or alcohols, illustrating their synthetic versatility. The first synthesis of alcyopterosin A
二烷氧基钛环戊二烯由两种不同的乙炔和二价钛醇盐试剂 Ti(Oi-Pr)4/2 i-PrMgCl 制备,与炔丙基溴反应直接得到苄基钛化合物。得到的苄基钛化合物经过氘分解、碘分解(用 I2)或氧化(用 O2 气体)得到相应的氘标记化合物、碘化物或醇,说明了它们的合成多功能性。alcyopterosin A 的首次合成,一种最近分离和表征的双环芳香倍半萜类化合物,已通过这种方法实现,从乙炔和二炔的适当组合开始。