| 摘要 |
Provided herein is a method of producing C11, C12, and C13 nylon precursors from oleic acid or esters of oleic acid, the method involving amide formation, ring-closing metathesis, and hydrogenation. Further provided are the products of the method described. Provided herein is a method for producing a lactam, the method comprising the steps of converting oleic acid or an ester of oleic acid into an amide having a general formula of H3C-(CH2)rCH=CH-(CH2)rCONR-(CH2)n-CH=CH2, wherein n is 1, 2, or 3, and R is either hydrogen or benzyl; subjecting the amide to a ring-closing metathesis reaction to produce an intermediate having a general formula of -(CH2)rCONR-(CH2) n-CH=CH2-, wherein n is 1, 2, or 3, R is either hydrogen or benzyl, and both ends are connected to each other; and hydrogenating the intermediate to produce a saturated lactam. In certain embodiments, the saturated lactam has a formula of -NH-(CH2) 10-CO-. |
