SELECTIVE PHOTOCYCLIZATION REACTIONS OF (Z)-N-ACETYL-alpha-DEHYDRO(9-PHENANTHRYL)ALANINE ALKYL ESTERS AND N ',N '-DIALKYLAMIDES TO DIBENZO[f,h]ISOQUINOLINE DERIVATIVES

• Published in: Heterocycles Vol. 89; no. 7; pp. 1678 - 1686
• Main Authors: Iijima, Yuto, Igarashi, Tetsutaro, Sakurai, Tadamitsu
• Format: Journal Article
• Language: English
• Published: OXFORD Elsevier 2014
• Subjects: Chemistry; Chemistry, Organic; Physical Sciences; Science & Technology; ISOQUINOLINE

(Z)-N-Acetyl-alpha-dehydro(9-phenanthryl)alanine alkyl esters and N',N'-dialkylamides [(Z)-1] were synthesized, and their photocyclization behavior in methanol was explored. The irradiation of (2)-1 in a protic polar solvent at wavelengths greater than 280 nm caused selective cyclization r...