Synthesis and reactions of 2-cyclopropyl-2-propenyltrimethylsilane. Silicon-directed generation of cyclopropylcarbinyl system
摘要:
2-Cyclopropyl-2-propenyltrimethylsilane reacts with various kinds of carbon electrophiles to afford the corresponding allylation products without contamination of other products based on the rearrangement of a cyclopropyl ring.
Cooperative Titanocene and Phosphine Catalysis: Accelerated C–X Activation for the Generation of Reactive Organometallics
作者:Lauren M. Fleury、Andrew D. Kosal、James T. Masters、Brandon L. Ashfeld
DOI:10.1021/jo301726v
日期:2013.1.18
transmetalation approach toward the generation of Grignard and organozinc reagents mediated by a titanocene catalyst. This method enables the metalation of functionalized substrates without loss of functional group compatibility. Allyl zinc reagents and allyl, vinyl, and alkyl Grignard reagents were generated in situ and used in the addition to carbonyl substrates to provide the corresponding carbinols in yields