Generation of Allenic/Propargylic Zirconium Complexes and Subsequent Cross-Coupling Reactions: A Facile Synthesis of Multisubstituted Allenes
作者:Hao Zhang、Xiaoping Fu、Jingjin Chen、Erjuan Wang、Yuanhong Liu、Yuxue Li
DOI:10.1021/jo9020419
日期:2009.12.18
The β-alkoxide elimination reaction of propargylic ether with Negishi reagent leads to allenes and/or alkynes after hydrolysis. The product distribution is highly dependent on the substitution pattern of starting propargylic ethers; that is, aryl- or alkyl-substituted propargylic ethers favor the allene products, whereas TMS-substituted propargylic ethers afford alkynes. DFT calculations revealed that
Synthesis of Allenes by Catalytic Coupling of Propargyl Carbonates with Aryl Iodides in the Presence of Diboron Species
作者:Yuzhu Yang、Kálmán J. Szabó
DOI:10.1021/acs.joc.5b01842
日期:2016.1.4
Bimetallic copper-/palladium-catalyzed multicomponent reaction of propargyl carbonates, aryl iodides, and diboron species was studied. This procedure can be used for synthesis of di-, tri-, and tetra-substituted allenes. Using diboronic acid, the reaction is supposed to proceed via allenylboronic acid intermediate.
Organocuprate-induced coupling of propargyl or enyne alcohols using (methylphenylamino)tributylphosphonium iodide. Regiocontrolled synthesis of allenes and conjugated enynes
作者:Yoshio Tanigawa、Shunichi Murahashi
DOI:10.1021/jo01310a066
日期:1980.10
TANIGAWA YOSHIO; MURAHASHI SHUN-ICHI, J. ORG. CHEM., 1980, 45, NO 22, 4536-4538