Novel Ring Contraction Reaction for the Synthesis of Functionalized Tetrathiamacrocyclic Ligand Molecules
作者:Peter Comba、Andreas Fath、Bernd Nuber、Alexander Peters
DOI:10.1021/jo971246y
日期:1997.11.1
methane) and cis/trans-anti-[12]aneS(4)-(CH(2)SCH(3))(2) (1,4,7,10-tetrathiadodecane-5,11-bis((methylthio)methane)). The mechanism of the ring contraction reaction is discussed in terms of the reactivity of the monochlorinated macrocycle toward ring contraction and the stereochemistry of the chlorinated intermediates and the thiomethylated products, which are based on the X-ray crystal structure analyses
[14] aneS(4)-ol(1,4,8,11-四硫代癸酸酯6-ol)和顺/反-[14] aneS(4)-二醇(顺/反-1,4,8)的氯化,11-十四硫代十四烷-6,13-二醇)产生相应的二氯取代大环[14] aneS(4)-Cl(1,4,8,11-十四硫代十四烷6-氯化物)和顺/反-[14] aneS (4)-Cl(2)(顺/反-1,4,8,11-十四硫代十四烷6,13-二氯化物),收率高。氯化物的硫代甲基化产生环收缩的侧基硫醚大环[13] aneS(4)-CH(2)SCH(3)(1,4,7,10-四噻十三烷-5-(甲硫基)甲烷)和顺式/反式-抗-[12] aneS(4)-(CH(2)SCH(3))(2)(1,4,7,10-四硫十二烷-5,11-双((甲硫基)甲烷))。