Thienyl maleic anhydride

H. Miyasaka, S. Arai, A. Tabata, T. Nobuto, N. Mataga, and M. Irie, Picosecond laser photolysis studies on photochromic reactions of l,2-bis-(2,4,5-trimethyl-3-thienyl)maleic anhydride in solutions, Chem. Phys. Lett. 230, 249-254 (1994). 

Fulgides and Fulgimides - A theoretical study of the photochromic compound 2,3-bis(2,4,5-trimethyl-3-thienyl)maleic anhydride has been reported. The photochromic properties of the indyl fulgide ( )-l-benzyl-2-methyl-3-indylethylindene(isopropylidene) succinic anhydride have been studied.The photochromism of (232) and (233) has been investigated. The cyclizations are reversible and the materials show reasonable fatigue resistance. 

FIG. 16.8 Photochramic reactions of (a) l,2-bis-(2-meth)rM-benzothiophen-3.yl)perfluorocydof>en-tene, and (b) 2- l,2-dimethyi-3-indolyt)-3-(2,4,5-trimethy. 3-thienyl)maleic anhydride. 

Scheme 5.6 Photoisomerization of3-(l-octyl-2-methyl-3-indolyl)-4-(2,3,5-trimethyl-l-thienyl)maleic anhydride.

Figure 38 Photochromism-based 3D optical data storage, (a) The read-write mechanism using two different wavelengths (1064 and 532 nm) proposed by Renzepis etal. [54] (b) Spirobenzopyran absorbs a 1064 nm photon and a 532 nm photon to become merocyanin. (c and d) gives 1,2-bis(2-methyl-1-benzothiophen-3-yl)perfluorocyclopentene and 2-(1,2-dimethyl-3-indolyl)-3-(2,4,5-trimethyl-3-thienyl)maleic anhydride which are highly stable molecules with potential application in 3D optical data storage. The illustration of the write/read optics is reproduced with permission from ACS.

Closely related to the vinylbenzo[b]thiophene reactions are the condensations of the bisbenzo[b]thienyls 108 and 110 with maleic anhydride in the presence of the dehydrogenating agent chloranil to form 419 and 420, respectively (55-78%), which are hydrolytically decarboxylated (37-62%) to the parent pentacycles 56 and 54 by means of soda lime at 400°C.146... 

Poly(l-octadecene-co-maleic anhydride) Poly[3-octylthiophene-co-2-(3-thienyl)acetyl 440... 

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