... Download full text in PDF. Tetrahedron Letters Vol. 21, pp 1525 - 1526 0040-4039/80/0415- 152502.00/0 ergamon Press Ltd. 1980. Printed in Great Britain PHOTOCYCLIZATION OF METHYL 2-ARYLTHIOACETOACETATES A FACILE SYNTHESIS OF BENZOTH10PHENES Tadashi Sasaki* and Kenji Hayakawa Institute of Applied Organic Chemistry, Faculty of Engineering Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464, Japan Summary: A ...