Main > ORGANIC CHEMICALS > HeteroCyclics > Thiazolidine > Deriv

Product Japan. S

PATENT ASSIGNEE'S COUNTRY Japan
UPDATE 11.99
PATENT ASSIGNEE Sankyo (Tokyo)
PATENT CLAIMS Thiazolidine-2,4-dione-3-[C(Ph)3]-5-(4'-hydroxybenzyl) prepn
- Reacting p-hydroxybenzaldehyde with thiazolidine-2,4-dio
ne & thereafter reacting prodt with acetic anhydride to form
5-(4-acetoxybenzylidene)thiazolidine-2,4-dione (I)
- Hydrogenating (I) to form 5-(4-acetoxybenzyl)thiazolidine
-2,4-dione (II)
- Reacting (II) with triphenylmethyl chloride to form 5-(4-aceto
xybenzyl)-3-triphenylmethylthiazolidine-2,4-dione (III)
- Hydrolyzing (III)
PATENT PHOTOCOPY Available on request

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