N-Heterocyclic Olefin Catalyzed Silylation and Hydrosilylation Reactions of Hydroxyl and Carbonyl Compounds
作者:Uǧur Kaya、Uyen P. N. Tran、Dieter Enders、Junming Ho、Thanh V. Nguyen
DOI:10.1021/acs.orglett.7b00306
日期:2017.3.17
N-Heterocyclic olefins (NHOs), the alkylidene derivatives of N-heterocycliccarbenes (NHCs), have recently emerged as a new family of promising organocatalysts with strong nucleophilicity and Brønsted basicity. The development of a novel method is shown using NHOs as efficient promoters for the direct dehydrogenative silylation of alcohols or hydrosilylation of carbonyl compounds. Preliminary results
Exploring Multistep Continuous-Flow Hydrosilylation Reactions Catalyzed by Tris(pentafluorophenyl)borane
作者:Lewis C. Wilkins、Joseph L. Howard、Stefan Burger、Louis Frentzel-Beyme、Duncan L. Browne、Rebecca L. Melen
DOI:10.1002/adsc.201700349
日期:2017.8.7
Exploring the combination of continuous‐flow processes with the boron Lewis acid catalyzed hydrosilylation of aldehydes and ketones has delivered a robust and generally applicable reaction protocol. Notably this approach permits ready access to high temperatures and pressures and thus allows improved reactivity of substrates that were previously recalcitrant under the traditional approach. Efforts