反应详情

147 parts by mass of the obtained caproic acid and an equivalent amount of N-chlorodiisopropylamine were added to 1,000 parts by mass of 84% sulfuric acid and were reacted for 5 hours at 25° C. to obtain 177 parts by mass of 5-chlorocaproic acid. Then 177 parts by mass of the 5-chlorocaproic acid were boiled with an aqueous solution of an equivalent amount of sodium hydroxide to obtain 129 parts by mass of δ-caprolactone. The 13C-NMR (100 MHz, TMS, CDCl3) of the synthesized δ-caprolactone was measured to obtain the following δ values: 19.90 ppm, 20.88 ppm, 34.27 ppm, 35.31 ppm, 70.44 ppm and 172.84 ppm.

1. customwere reacted for 5 hours at 25° C.