No abstract

No abstract

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

The Silicon-Assisted Aza-(2,3)-Wittig Sigmatropic Rearrangement.-The diastereoselectivity of the aza-(2,3)-Wittig rearrangement is enhanced to afford the trans-products (XI) by judicious placement of an anion-stabilizing Tms group. An increase of steric bulk of the substituent R1 has little effect on the diastereoselection. -(ANDERSON, J. C.; SIDDONS, D. C.; SMITH, S. C.; SWARBRICK, M. E.; J.

1998amines amines (benzene compounds) Q 0120 -099The Aza-[2,3]-Wittig Sigmatropic Rearrangement of Z(C)-Alkenes. -By employing a trimethylsilyl anion stabilizing group, the aza-[2,3]-Wittig rearrangement of the alkenes (I) can be achieved. The Z-alkene rearranges highly diastereoselectively. -(ANDERSON, J. C.; DUPAU, P.; SIDDONS, D. C.; SMITH, S. C.; SWARBRICK, M. E.; Tetrahedron