Steric acceleration of reductive desulfonation of 1,8-naphthalenedisulfonate by an NADH model compound
作者:Seiji Shinkai、Hideo Kuroda、Yumiko Kusano、Osamu Manabe、Akiyoshi Ito
DOI:10.1016/s0040-4039(01)81863-3
日期:1981.1
1,8-Naphthalenedisulfonate was reductively desulfonated by N-benzyl-1,4-dihydronicotinamide, whereas no desulfonation was observed for the 1,6-isomer. The high reactivity of the 1,8-isomer is attributed to the steric-strain that enforces the shift of the initial state with the sp2 -carbon close to the transition state with the sp3 - carbon.
1,8-萘二磺酸盐被N-苄基-1,4-二氢烟碱酰胺还原脱磺,而未观察到1,6-异构体的脱磺化。1,8-异构体的高反应性归因于空间应变,该空间应变迫使sp 2-碳的初始状态转变为接近sp 3-碳的过渡态。