作者:N.S. Zefirov、S.V. Rogozina
DOI:10.1016/s0040-4020(01)97102-9
日期:1974.1
A number of heteroanalogues of bicyclo[3.3.1]nonane containing heteroatoms in 3-, 3,7- and 3,7,9-positions has been synthesized. 1H NMR measurement has shown that the compounds of the types 4,5 and 6 (Y = oxygen) are double-chairs with the “wings” of the molecule flattened. However, a new conformational effect has been found for the sulfur containing compounds of type 5 and 6 (X,Y = sulfur) which show
合成了许多在3-,3,7-和3,7,9-位含有双环[3.3.1]壬烷的杂原子的杂类似物。1个1 H NMR测定表明,类型的化合物4,5和6(Y =氧)是双椅子与“翅膀”的分子平坦化。然而,已经发现对于类型5和6的含硫化合物(X,Y =硫)具有新的构象作用,其显示出明显增加了采用船椅构象的趋势。