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Ring closing metathesis approach to produce precursors of nylon 11, 12, and 13 from oleic acid
Ring closing metathesis approach to produce precursors of nylon 11, 12, and 13 from oleic acid
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机译:闭环易位方法从油酸生产尼龙11、12和13的前体
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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—.
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