PROCESS FOR THE MANUFACTURE OF ALDEHYDES

摘要

1528720 Cyclohexene derivatives L GIVAUDAN & CIE SA 11 July 1977 [12 July 1976] 29001/77 Heading C2C The invention comprises compounds of the formula wherein the N-2-hydroxyethyl-oxazolidinyl group is in the 4- or 5-position. The compounds may be prepared by reacting a 4-methyl-3- pentenyl cyclohexene carbaldehyde with diethanolamine. The compounds may be converted to compounds of the formula wherein the formyl group is in the 4- or 5- position by hydration with 50-65% sulphuric acid and subsequent splitting off of the N-2- hydroxyethyl-oxazolidinyl protecting group.