A new photochromic tetrahydroindolizine.
The title compound, dimethyl 10b'-(4-fluorostyryl)-8',9'-dimethoxy-4-nitro-5',6'-dihydrospiro[9H-fluorene-9,1'(10b'H)-pyrrolo[2,1-a]isoquinoline]-2',3'-dicarboxylate, C38H31FN2O8, is a new photochromic tetrahydroindolizine. One of the C-C bonds at the spiro C atom is very long [1.630 (2) A], thus explaining the photochromic behaviour.
Feng
Li
L
Department of Chemistry, Fudan University, Shanghai 200433, People's Republic of China.
Li
Zhi-Ming
ZM
Tan
Yong-Sheng
YS
Chen
Min-Qin
MQ
Weng
Lin-Hong
LH
Tao
Feng-Gang
FG