Tetrahedron Letters p. 5863 - 5866 (1993)
Update date:2022-08-04
Topics:
Jahn, Ullrich
Schroth, Werner
α-Chloroethers such as chloromethyl alkyl ethers of 1,3,3-trichloro-1-isobutoxyprop-2-ene react with trimethylsilyl-N,N-dialkylamines to give the Mannich-reagent and new 3,3-dichloroprop-2-en-1-ylidene-N,N-dialkyliminium chlorides (vinylogous Viehe-reagents), respectively.Extension of this method leads to the reagent system trimethylsilyl-N,N-dialkylamine/trimethylsilylchloride or -triflate, which allows the direct conversion of carbonyl compounds into iminium salts.
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Doi:10.1002/cssc.201501224
(2015)Doi:10.1002/ardp.19743070511
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