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Acylation of sterically hindered 2-propargyl-1,3-diketones

✍ Scribed by S. I. Shergina; A. S. Zanina; I. E. Sokolov; M. S. Shvartsberg

Publisher
Springer
Year
1999
Tongue
English
Weight
237 KB
Volume
48
Category
Article
ISSN
1573-9171

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ChemInform Abstract: Acylation of Steric
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✍ S. I. Shergina; A. S. Zanina; I. E. Sokolov; M. S. Shvartsberg πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons βš– 29 KB πŸ‘ 1 views

Acylation of Sterically Hindered 2-Propargyl-1,3-diketones. -The acylation of sterically hindered propargyl-substituted 1,3-diketones (I) by acyl chlorides occurs selectively at the terminal acetylenic group in the presence of CuCl. Some peculiarities of this reaction are reported. -(SHERGINA, S. I.

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ChemInform Abstract: Alkylation of Sterically Hindered 1,3-Diketones under Phase-Transfer Conditions.
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A mild cleavage of 1,3-diketones: Prepar
A mild cleavage of 1,3-diketones: Preparation of 2-acyl-1,3-dithianes
✍ Robert J. Bryant; Edward McDonald πŸ“‚ Article πŸ“… 1975 πŸ› Elsevier Science 🌐 French βš– 70 KB

A mild method for cleaving 1,3-diketones is described. The products are 2-acyldithianes and these R-Csynthons can be alkylated under mildly basic conditions. Acetylacetone (1) reacted with propane-1,3-dithio tosylate (2) in methanol to give 2-acetyl-1,3-dithiane + (3) (82%), whose 'H-n.m.r. spectrum