ChemInform Abstract: Reactions of Titanium Derivatives of Some CH-Acids with Carbonyl Compounds. Part 2. Aldol Condensations with Titanium Derivatives of Benzyl Cyanide, Isopropyl Phenylacetate, Phenyl Benzyl Ketone and Ethyl Benzyl Ketone.

ChemInform ◽  
1990 ◽  
Vol 21 (46) ◽  
Author(s):  
A. N. KASATKIN ◽  
R. KH. BIKTIMIROV ◽  
G. A. TOLSTIKOV ◽  
A. G. NIKONENKO
Author(s):  
Yu. P. Kitaev ◽  
B. L. Moldaver ◽  
I. M. Skrebkova ◽  
V. G. Yakutovich

2018 ◽  
Vol 14 ◽  
pp. 3018-3024
Author(s):  
Rudolf Knorr ◽  
Barbara Schmidt

Sterically well-shielded against unsolicited Michael addition and polymerization reactions, α-metalated α-(1,1,3,3-tetramethylindan-2-ylidene)acetonitriles added reversibly to three small aldehydes and two bulky ketones at room temperature. Experimental conditions were determined for transfer of the nucleofugal title carbanion unit between different carbonyl compounds. These readily occurring retro-additions via C–C(O) bond fission may also be used to generate different metal derivatives of the nucleofugal anions as equilibrium components. Fluoride-catalyzed, metal-free desilylation admitted carbonyl addition but blocked the retro-addition.


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