SmI2/H2O/pyrrolidine mediated cleavage of benzylic alcohols and benzyl groups was studied and found to be a viable alternative to the Birch reduction yielding the corresponding deoxygenated product in excellent yield. The reaction has been investigated by kinetic methods, and a mechanism involving a pre-complexation of the alcohol to SmI2 followed by an amine mediated electron transfer and subsequent bond cleavage
研究了SmI 2 / H 2 O /
吡咯烷介导的
苄醇和苄基的裂解,发现它是桦木还原的可行替代方法,可产生高收率的相应脱氧产物。已经通过动力学方法研究了该反应,并且已经提出了一种机制,该机制涉及将醇预先络合至SmI 2,然后进行胺介导的电子转移,然后进行键裂解以及第二电子和质子的转移以产生
甲苯产物。 。在较高的
水浓度下,该反应受到强烈抑制,表明该反应是通过内球电子从sa(II)转移至苄基而进行的,过量的
水阻止了
苄醇与alcohol的配位。