Meta-Selective C–H Functionalization Using a Nitrile-Based Directing Group and Cleavable Si-Tether
摘要:
A nitrile-based template that enables metaselective C-H bond functionalization was developed. The template is applicable to a range of substituted arenes and tolerates a variety of functional groups. The directing group uses a silicon atom for attachment, allowing for a facile introduction/deprotection strategy increasing the synthetic practicality of this template.
Modular Approach to Reductive C<sub>sp2</sub>–H and C<sub>sp3</sub>–H Silylation of Carboxylic Acid Derivatives through Single-Pot, Sequential Transition Metal Catalysis
modular approach to catalytic reductive Csp2–H and Csp3–H silylation of carboxylic acid derivatives encompassing esters, ketones, and aldehydes. Choice of either an Ir(I)/Rh(I) or Rh(I)/Rh(I) sequence leads to either exhaustive reductive ester or reductiveketone/aldehyde silylation, respectively. Notably, a catalyst-controlled direct formation of doubly reduced silyl ethers is presented, specifically
Modular Synthesis of (Borylmethyl)silanes through Orthogonal Functionalization of a Carbon Atom
作者:Rajdip Chowdhury、Gábor Zoltán Elek、Beatriz Meana-Baamonde、Abraham Mendoza
DOI:10.1021/acs.orglett.3c00474
日期:2023.3.24
building blocks in organic synthesis displaying a unique reactivity. Yet, the synthesis of more advanced derivatives is limited by the advanced silicon intermediates required for their preparation. Herein, a one-pot synthesis of (borylmethyl)silanes is developed, sourced on available alkyl-, aryl-, alkoxy-, aryloxy-, and silyl-hydrosilane materials. The privileged reactivity of N-hydroxyphthalimidyl diazoacetate
Etherification of alkoxydialkylsilanes with carbonyl compounds
作者:Xinglong Jiang、Joginder S Bajwa、Joel Slade、Kapa Prasad、Oljan Repič、Thomas J Blacklock
DOI:10.1016/s0040-4039(02)02253-0
日期:2002.12
A novel method for preparing ethers from alkoxydialkylsilanes and carbonyl compounds through reductive etheritication is described. The salient feature in this method is the utilization of internal hydrogen as the hydride source for reducing the oxonium intermediate generated by using the Cl(R)(2)SiBr[BiBr3/Cl(R)(2)SiH] catalytic system. (C) 2002 Published by Elsevier Science Ltd.