Iodoetherification of homoallylic alcohols : A stereoselective approach to tetrahydrofurans
摘要:
Iodoetherification of homoallylic alcohols proceeds efficiently and with high levels of stereoselection by a 5-endo-trig process when anhydrous acetonitrile is used as the solvent.
Stereochemistry of the Kulinkovich Cyclopropanation of Nitriles
作者:Dmitry Astashko、Hyung Goo Lee、Denis N. Bobrov、Jin K. Cha
DOI:10.1021/jo900823h
日期:2009.8.7
The stereochemistry of the Kulinkovich cyclopropanation of nitriles with alkenes has been examined by employing (E)-disubstituted alkenes and deuterium-labeled homoallylic alcohols as a stereochemical probe. An intramolecularcyclopropanation proceeds with preservation of the olefin configuration. On the other hand, intermolecular counterparts occur with both preservation and reversal of the olefin
通过使用 ( E )-二取代烯烃和氘标记的高烯丙醇作为立体化学探针,研究了腈与烯烃的 Kulinkovich 环丙烷化的立体化学。分子内环丙烷化在保持烯烃构型的情况下进行。另一方面,在形成环丙烷的步骤中,烯烃构型的保留和反转都会发生分子间对应物,这分别对应于 Ti-C 键处构型的保留和反转。这些不常见的立体化学结果与叔酰胺的 Kulinkovich 环丙烷化的结果形成对比。
Vasil'ev, A. A.; Cherkaev, G. V.; Nikitina, M. A., Russian Journal of Organic Chemistry, 1994, vol. 30, # 6.1, p. 870 - 875
作者:Vasil'ev, A. A.、Cherkaev, G. V.、Nikitina, M. A.
DOI:——
日期:——
112. Fused carbon rings. Part VII. The preparation of cyclic hydrocarbons from unsaturated tertiary alcohols. The synthesis of cis-9-methyl-octalin and -decalin, and a proof of the presence of the angular methyl group
作者:D. C. Hibbit、R. P. Linstead
DOI:10.1039/jr9360000470
日期:——
Iodoetherification of homoallylic alcohols : A stereoselective approach to tetrahydrofurans
作者:Simon B. Bedford、Kathryn E. Bell、Garry Fenton、Christopher J. Hayes、David W. Knight、Duncan Shaw
DOI:10.1016/s0040-4039(00)79029-0
日期:1992.10
Iodoetherification of homoallylic alcohols proceeds efficiently and with high levels of stereoselection by a 5-endo-trig process when anhydrous acetonitrile is used as the solvent.
3-DESOXY-2-METHYLENE-19-NOR-VITAMIN D ANALOGS AND THEIR USES