dithioethers [Ar2C N–C(StBu) C(H)(StBu)] (7a Ar = C6H5; 7b Ar' = p-ClC6H4). The reaction of 4a with NaSEt conducted in neat EtSH produces [Ph2C N–C(H)(SEt)–CCl2H] 8, which after dehydrochloration by NaOMe and subsequent addition of NaSEt is converted to [Ph2C N–C(SEt) C(H)(SEt)] 7c. Upon the reaction of 4c with NaSiPr, the intermediate dithioether [(p-ClC6H4)2C N–CH C(SiPr)2] 5k is converted to tetrakisthioether
摘要 二芳基
重氮甲烷 Ar2C N2 在 Cl3C–CH N–CO2Et 1 上的 1,3-偶极环加成生成 Δ3-
1,2,4-三唑啉 2. 2 个
铅通过瞬态偶氮甲碱叶立德 3 热解为二芳基二
氯氮杂
丁二烯 [Ar(Ar') CN–CH CCl2] 4. 在
DMF 中用 NaSR 处理 4a (Ar = Ar' =
C6H5) 和 4c (Ar = Ar' = p-ClC6H4) 产生 2-氮杂
丁二烯 [Ar2C N–C(H) C(SR) 2] 5. 相反,NaStBu 对 4 的亲核攻击提供了氮杂二烯二
硫醚 [Ar2C N–C(StBu) C(H)(StBu)] (7a Ar = ; 7b Ar' = p-ClC6H4)。4a 与 Na
SEt 在纯 EtSH 中进行的反应产生 [Ph2C N-C(H)(
SEt)-CCl2H] 8,在 NaOMe 脱氢和随后加入 Na
SEt 后转化为