1.
RSC Adv
; 11(12): 6504-6508, 2021 Feb 04.
Article
in English
| MEDLINE
| ID: mdl-35423190
ABSTRACT
TEMPO was more suitable at photocyclizing stilbene than iodine. As stilbene concentration increased, TEMPO produced a higher yield of phenanthrene at shorter times and significantly reduced the potential for undesired [2+2] cycloadditions. Iodine retarded phenanthrene formation because it promoted isomerization to (E)-stilbene which encouraged [2+2] cycloaddition.