Methyl mesityl ketoxime

This reductive dehydroxylation may be involved in deoximation by Fe(CO)s (2, 229-230). Thus treatment of methyl mesityl ketoxime (3) under the conditions used above gives the imine (4). In this case steric hindrance probably inhibits ready hydrolysis to the ketone. 

Iron pentacarbonyl can regenerate carbonyl compounds from oximes under aprotic conditions (Alper and Edward, 1967). The presence of boron trifluoride etherate affords products in 55-81% yields although the reaction can take place—sometimes in reduced yields—in the absence of the Lewis acid (XXXIII - XXXIV) (Alper and Edward, 1969). The intermediate was isolated using the sterically hindered reactant, methyl mesityl ketoxime (Dondoni and Barbaro, 1975). 

The reaction of ethyl mesityl ketoxime with acetylene under atmospheric pressure affords 2-mesityl-3-methylpyrrole (23%), 2-mesityl-3-methyl-N-vinylpyrrole (8%), Z-(5%), and E- 2%) isomers of 0-vinyl mesityl ketoximes (Scheme 1.47) [222]. 

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See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ , ]

See also in sourсe #XX -- [ ]

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