Answers are grounded in this paper and cite their sources.
Chromium(III) tetraphenylporphyrin triflate, Cr(TPP)OTf, works as an efficient and characteristic Lewis acid catalyst in the regio- and stereoselective rearrangement of epoxides to aldehydes. This Cr(TPP)OTf-catalyzed reaction is an operationally simple and especially convenient method for synthesizing optically active beta-siloxy aldehydes from 2,3-epoxy silyl ethers which are readily available in enantiomerically enriched forms by the Sharpless epoxidation of allylic alcohols followed by silylation.
No takes yet. Share an insight, caveat, or question.
Suda et al. (2004) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: