A comparison of hydrogen bonding solvent effects on the singlet oxygen reactions of allyl and vinyl sulfides, sulfoxides, and sulfones
作者:Kristina L. Stensaas、Brent V. McCarty、Natacha M. Touchette、James B. Brock
DOI:10.1016/j.tet.2006.08.084
日期:2006.11
in the following deuterated solvents: acetonitrile, benzene, chloroform, methanol, or methanol/water mixture. In each case the ene allylic hydroperoxide products and/or the [2+2] cycloaddition products were quantified and inspected for possible hydrogen bonding induced differences in product selectivity and regiochemistry. After comparison to literature values for related substrates, the results indicate
单重态氧(1 Δ克)2-甲基-3-苯基硫基-2-丁烯的光氧化反应(图1A),1 - [(4-硝基苯基)硫基] -2,3-二甲基-2-丁烯(2C),2- -甲基-3-苯基亚磺酰基-2-丁烯(3),2-甲基-3-苯基磺酰基-2-丁烯(6)和1-[((4-硝基苯基)磺酰基] -2,3-二甲基-2-丁烯(7C)在下列氘代溶剂中进行:乙腈,苯,氯仿,甲醇或甲醇/水混合物。在每种情况下,对烯丙基氢过氧化物产物和/或[2 + 2]环加成产物进行定量并检查可能的氢键引起的产物选择性和区域化学差异。与相关底物的文献值进行比较后,结果表明,只有乙烯基硫化物的光氧化反应容易受到氢键溶剂作用的影响。