The thermal treatment of the mixture of 2-alkenyloxy-1-naphthaldehydes and hydroxylamine hydrochloride in ethanol gave intramolecular [3++2] cycload-ducts, 1,3a,4,11c-tetrahydro-3H-naphtho[1′,2′: 5,6]pyrano[4,3-c]isoxazole hydrochlorides.
将2-烯氧基-1-
萘醛和
盐酸羟胺在
乙醇中的混合物进行热处理,得到分子内[3++2]环加合物,1,3a,4,11c-四氢-3H-
萘并[1',2' :5,6]
吡喃并[4,3-c]
异恶唑盐酸盐。