INHIBITING AND/OR PREVENTING THE FORMATION OF BY-PRODUCTS IN A DIELS-ALDER REACTION

摘要

1492901 Cyclohex-3-enyl acetate; Diels-Alder reaction NIPPON OIL CO Ltd 11 March 1975 [12 March 1974] 10160/75 Heading C2C [Also in Division C5] The formation of by-products by polymerization in a Diels-Alder reaction is inhibited by carrying out the reaction between a conjugated diolefinic compound and a monoolefinic compound in the presence of a p-phenylenediamine compound. In Example 6 #SP3/SP-cyclohexenol-1- acetate is prepared by reacting butadiene and vinylacetate in the presence of N-butyl-NSP1/SP- phenyl-p-phenylenediamine.