Oblon, Spivak, McClelland, Maier & Neustadt
Process for producing vitamin A aldehyde
 The invention provide a process for producing vitamin A aldehyde in high yield by oxidizing vitamin A with a aldehyde of the general formula (1) ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different and respectively represents a lower alkyl group or a lower alkenyl group in the presence of aluminum alkoxide in a catalytic amount. 
Kuraray Company Ltd.
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inventional inventional additional
Takashi Toshiki Kazuo
Onishi Mori Yamamoto