A Convenient Synthesis of New Types of Benzodiazepine Derivatives: 2-Alkylsulfanyl-3H-4,5-dihydro-1,3-benzodiazepin-4-ones and 2-Alkylsulfanyl-3H-4,5-dihydro-1,3-benzodiazepine-4-thiones - Fukamachi, Shuhei; Kobayashi, Akihiro; Konishi, Hisatoshi; Kobayashi, Kazuhiro (Synthesis, 2010)