Japanese Patent JPH0480889

B2

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 I and I' wherein R1 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, R2 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, =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.

JPS6118726	DIMERIZATION OF HYDROCARBONS HAVING AT LEAST ONE HYDROGEN ATOM IN THE ALPHA-POSITION AND BETA-GAMMA UNSATURATED DOUBLE BOND
WO/1998/015509	ALKYLATION AND ACYLATION REACTIONS

DEREKU HARORUDO RICHAADO BAATON
UIRIAMU BURANKUSU MAZAUERU
SAMIIRU ZAARU ZAARU

JP2223183A

December 21, 1992

February 15, 1983

Click for automatic bibliography generation  

ROUSSEL UCLAF

C07B37/04; B01J31/00; B01J31/02; C07B31/00; C07B61/00; C07C67/00; C07C205/04; C07J5/00; C07J7/00; C07J9/00; C07J13/00; C07J41/00; C07J63/00

Next Patent: PATTERN RECOGNIZING DEVICE