Synthesis of Germatranyl Derivatives of Esters of Carboxylic Acids via Organometallic (Si, Ge, Sn) Reagents
作者:Galina S. Zaitseva、Ljudmila I. Livantsova、Mohammed Nasim、Sergei S. Karlov、Andrei V. Churakov、Judith A. K. Howard、Evgeni V. Avtomonov、Jörg Lorbert
DOI:10.1002/cber.19971300611
日期:1997.6
Trialkylstannyl esters of tris(2-hydroxyalkyl)amines, N(CH2CHROSnAlk3)3 (9-11 (R = H, Me; Alk = Et, Bu), react with X3GeC(R1)(R2)COOR3 (12–17) (X Cl or Br; R1, R2=H, Me, Ph, SiMe3, COOEt; R3=Me, Et) to give esters of α-germatranylcarboxylic acids, N(CH2CHRO)3GeC(R1)(R2)-COOR3 (1–8), in high yields. The synthesis of esters 12–17 is reported. Esters of α-germatranyldiphenylacetic acid 24 and 25 can be
三(2-羟烷基)胺的三烷基锡烷基酯,N(CH 2 CHROSnAlk 3)3(9-11(R = H,Me; Alk = Et,Bu),与X 3 GeC(R 1)(R 2)反应COOR 3(12 – 17)(X Cl或Br; R 1,R 2 = H,Me,Ph,SiMe 3,COOEt; R 3 = Me,Et)得到α-香叶烷基羧酸酯N(CH 2 CHRO)3 GeC(R 1)(R 2)-COOR 3(1 – 8),产量高。酯的合成12 - 17进行报告。通过用Et 3 SnOMe处理二苯乙烯酮得到原位Et 3 SnC(Ph 2)COOMe(23),然后与GeCl 4反应得到原位Cl 3 GeC(α),可以得到α-香叶烷基二苯基乙酸24和25的酯。pH值2)COOMe(22,并进一步反应9或11的germatrane,分别减少6上LiAlH 4乙醚中的H 2 O 3导致锗-碳键断裂,随后形成