Improved Method for the Synthesis of β-Carbonyl Silyl-1,3-Dithianes by the Double Conjugate Addition of 1,3-Dithiol to Propargylic Carbonyl Compounds
作者:Sumit Mukherjee、Dimitra Kontokosta、Aditi Patil、Sivakumar Rallapalli、Daesung Lee
DOI:10.1021/jo901950e
日期:2009.12.4
Base-mediated double Conjugate addition of 1,3-propane dithiol to various silylated propargylic aldehydes and ketones allows for an efficient and scalable synthesis of beta-carbonyl silyl-1,3-dithianes.
On the synthesis of β-keto-1,3-dithianes from conjugated ynones catalyzed by magnesium oxide
作者:Chunli Xu、Jonathan K. Bartley、Dan I. Enache、David W. Knight、Matthew Lunn、Martin Lok、Graham J. Hutchings
DOI:10.1016/j.tetlet.2008.02.030
日期:2008.4
Mao was used for the first time as a heterogeneous basic catalyst to synthesize beta-keto-1,3-dithianes, potentially useful synthetic intermediates, from conjugated ynones and ynoates. (C) 2008 Elsevier Ltd. All rights reserved.
Merging Asymmetric [1,2]-Additions of Lithium Acetylides to Carbonyls with Type II Anion Relay Chemistry
作者:Kevin T. O’Brien、Amos B. Smith
DOI:10.1021/acs.orglett.9b02959
日期:2019.9.20
union of a variety of lithium acetylides and electrophiles exploiting an achiral linchpin via an anionic reaction cascade. This Type II AnionRelayChemistry tactic is initiated via an enantioselective [1,2]-carbonyl addition exploiting BINOL catalysis to access an enantioenriched alkoxide intermediate. Migration of charge across the linchpin via a [1,4]-Brook rearrangement with electrophile capture