Author/Authors :
Sato، نويسنده , , Ryu and Ohta، نويسنده , , Hidetoshi and Yamamoto، نويسنده , , Tatsuya and Nakajo، نويسنده , , Shiduko and Ogawa، نويسنده , , Satoshi and Alam، نويسنده , , Ashraful، نويسنده ,
Abstract :
Novel axially chiral benzopentathiepins were synthesized by sulfurization of dithiastannole. Naphthyl moiety was introduced near the pentathiepin ring by Suzuki–Miyaura cross-coupling reaction. Pentathiepins were found as diastereomeric mixture. Rotational energy barrier for C–C bond was estimated by theoretical calculation. Energy barrier for the inversion of pentathiepin ring was experimentally determined by variable temperature 1H NMR.
Keywords :
axial chirality , Diastereomer , Pentathiepin , naphthalene , ring inversion
