Compositions and method

Details Compositions and method Compositions and method

1983-01-31

1984-12-25

Roberts, Elbert L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603975, 502167, C07J 500

Patent

active

044902964

ABSTRACT:
A novel nitromethylation composition comprising nitromethane and a catalytic amount of a bifunctional basic catalyst, optionally in an organic solvent, a method of nitromethylating ketonic compounds with said compositions and novel steroids of the formulae ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen, alkyl of 1 to 4 carbon atoms optionally substituted with an oxygen or nitrogen group or halogen and alkenyl and alkynyl of 2 to 4 carbon atoms, R.sub.2 is alkyl of 1 to 4 carbon atoms and the A,B,C and D rings optionally contain at least one double bond and optionally substituted with at least one member of the group consisting of --OH, .dbd.0, halogen, alkyl and alkoxy of 1 to 4 carbon atoms and alkenyl and alkynyl of 2 to 4 carbon atoms and their use to form the corresponding 21-acetoxy-20-ketocorticosteroids compounds in a simple manner.

REFERENCES:
patent: 3980681 (1976-09-01), Sykes et al.

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