作者:Abdeslam Abou、Francisco Foubelo、Miguel Yus
DOI:10.1016/j.tet.2006.08.064
日期:2006.10
n-dichloroalkanes 3a (n=2–6) with an excess of lithium powder and a catalytic amount of 4,4′-di-tert-butylbiphenyl (DTBB; 2.5 mol %) in the presence of different carbonyl compounds [ButCHO, PhCHO, Et2CO, (CH2)4CO, (CH2)5CO, (CH2)7CO, (−)-menthone], in THF at −78 °C leads, after hydrolysis with water, to the expected 1,(n+2)-diols 4, yields being <25% for n=2, 3 and in the range of 45–79% for n=4–6. When the
1,n-二氯烷烃3a(n = 2–6)与过量的锂粉和催化量的4,4'-二叔丁基联苯(DTBB; 2.5 mol%)在不同羰基存在下的反应化合物[卜吨CHO,苯甲醛,等2 CO,(CH 2)4 CO,(CH 2)5 CO,(CH 2)7 CO,( - ) -薄荷酮],在THF中在-78℃下引线,后用水水解,以期望的1,(ñ 2)-diols 4,产率是<25%ñ = 2,3和为45-79%的范围内ñ= 4–6。当相同的协议被施加到1,Ñ -bromochloroalkanes 3B和1,Ñ -dibromoalkanes 3C(Ñ = 2-6),二醇4在一般得到较低的产率。