Ketones synthesis with addition

Potassium tert-butanol a, - thylenealdehydes from ketones Synthesis with addition of 1 -atom... 

Aldehydes from ketones with simultaneous migration of the carbon double bond Synthesis with addition of 1 C-atom... 

An ale. soln. of the startg. m. added to an ale. soln. of K-tetraearbonylhydrido-ferrate, and stirred 5 hrs. at room temp, under argon furfurylaeetone. Y 82%. — This is the 2nd step of a 2-step proeess for the prepn. of methyl ketones from aldehydes, a synthesis with addition of 3 C-atoms. F. e. s. M. Yamashita et al., Tetrah. Let. 1975, 1867. 

Ethylenecarboxylic and a-alkylideneglutaric acids from ketones via y-carbo- erf-butoxy-(5-hydroxycarboxylic acid fert-butyl esters—Synthesis with addition of 4 C atoms s. 18, 730... 

Synthesis with addition of 2 C-atoms—C-Carbalkoxylation. The reaction of oxalyl bromide with suitable organic compounds may give glyoxylic acids, carboxylic acids and their respective esters, a-diketones, or ketones depending on electron configuration and reaction conditions.—E Asoln. of oxalyl bromide in abs. ether added slowly with shaking and cooling... 

Synthesis with addition of 1 G-atom—Labeled aldehydes s. 11, 889 Synthesis of ketones from a-halogenoketones ... 

---