| 摘要 |
1492359 Preparing morpholines TEXACO DEVELOPMENT CORP 5 May 1976 [2 June 1975] 18423/76 Heading C2C Morpholine compounds where each R is independently hydrogen or alkyl, and R<SP>1</SP> is hydrogen or optionally substituted alkyl or aryl, are made by heating a compound HO.CKH.CR 2 .O.CR 2 .CRH.OH to 250-350‹ C. under sufficient pressure to maintain the starting material end product substantially in the liquid phase, in the presence of a phosphorus-containing compound. |
