2-Functionalized allyl tris(trimethylsilyl)silanes as radical-based allylating agents
作者:Chryssostomos Chatgilialoglu、Carla Ferreri、Marco Ballestri、Dennis P. Curran
DOI:10.1016/0040-4039(96)01354-8
日期:1996.8
Radical allylations with 2-functionalized allyl tris(trimethylsilyl)silanes occur under mild conditions in good to excellent yield provided that the radical precursor and the silane have the appropriate electronic pairing. These reactions offer tin-free altermatives for transformations that are currently conducted with allyl stannanes.
Unexpected Electrophilic Rearrangements of Amides: A Stereoselective Entry to Challenging Substituted Lactones
作者:Claire Madelaine、Viviana Valerio、Nuno Maulide
DOI:10.1002/anie.200906416
日期:2010.2.22
Surprise, surprise! An unexpected skeletal rearrangement was developed into a chemo‐ and stereoselective synthesis of α‐allyl and allenyl lactones with challenging substitution patterns (see scheme; EWG=electron‐withdrawing group). The generality, unique features, and synthetic potential of this reaction were probed and a mechanism was proposed.
Free radical allylations of α-seleno carbonyl compounds with tributyl-substituted 2,4-pentadienyltin, 2-methyl-2-propenyltin, 2-butenyltin, and 3-methyl-2-butenyltin, are described. Such successful C–C bond formations, in particular with the 2-butenyltin and the 3-methyl-2-butenyltin, are owing to the high reactivity of the α-carbon radical, generated from α-seleno carbonyl compounds, toward allylic tin compounds.
Taming Keteniminium Reactivity by Steering Reaction Pathways: Computational Predictions and Experimental Validations
作者:Mark A. Maskeri、Anthony J. Fernandes、Giovanni Di Mauro、Nuno Maulide、K. N. Houk
DOI:10.1021/jacs.2c09146
日期:2022.12.28
Previous results from the Maulide group demonstrated an unexpected propensity for an alternative intramolecular Belluš–Claisen-type rearrangement rather than an expected intramolecular (2 + 2) cycloaddition. We have conducted a cooperative density functional theory/experimental investigation of this process, seeking insights into the competitionbetween the observed Claisen-type reaction and the historically