1,8-Naphthalenedicarboxylic anhydride

Didehydronaphthalene (62) has been observed directly in a low-temperature argon matrix following generation by consecutive wavelength-selective photolyses of 1,2-naphthalenedicarboxylic anhydride (60) (Scheme 6). ... 

Thus, the reactions of pyromellitic dianhydride with the dichlorobenzenes give naphthalenedicarboxylic anhydride and chlorinated derivatives (Fields and Meyerson, 1967d) ... 

In the banana Musa acuminata (Musaceae), a series of novel phenalenone-type compounds, including irenolone and 2-(4 -hydroxyphenyl)-l,8-naphthalenedicarboxylic anhydride, have been identified (Figure 29) 279,280 In the Compositae, acetophenone derivatives in yacon (Polymnia sonchifolia)114 and the coumarins scopoletin and ayapin in sunflower (Helianthus annuus f81 have been reported (Figure 29). 

Sato, T., Niino, H., Yabe, A., Consecutive Photolyses of Naphthalenedicarboxylic Anhydrides in Low Temperature Matrixes Experimental and Computational Studies on Naphthynes and Benzocyclopentadienylideneketenes, J. Phys. Chem. A 2001, 105, 7790 7798. 

Bromo-1,8-naphthalenedicarboxylic anhydride 1-Bromo-2-naphthol 4-Bromo-2-nitroaniline... 

Naphthalenedicarboxylic Acid. NaphthaUc acid readily dehydrates on heating to 1,8-naphthalenedicarboxyhc acid anhydride [81-84-5] (naphthahc anhydride) (41). The anhydride and its imide naphthaUmide [81-83-4] (R = H) (42) are intermediates for important dyes, pigments, optical bleaches, and biologically active compounds. 

Naphthalic anhydride, reaction with potassium hydroxide to yield 2,6-naphthalenedicarboxylic add, 40, 71... 

The same group has investigated the photo-addition of alkenes to 1,2- and 2,3-naphthalenedicarboxylic acid anhydride.No products of addition of the alkene to the naphthalene ring were observed instead the alkene inserts into the C(=0)-0 bond of the anhydride or adds to one of the carbonyl groups to produce an oxetane. By analogy with imides, the insertion reaction can be viewed as an addition to the partial C-o double bond Illustrated by the contributing structure (81) to give adduct (82) which collapses to the isolated insertion product (83). 

Naphtho[2,3-c]furan-1,3-dione 2,3-Naphthalenedicarboxylic acid anhydride Ci2Hg03 716-39-2 198.174 246 si EtOH, chi s eth, bz... 

Naphthalic anhydride, reaction with potassium hydroxide to yield 2,6-naphthalenedicarboxylic add, 71 N-a-Naphthylpiperidine, 7S N- Naphthylpiperidine, 74 Neopentyl alcohol, 76 t-Nitrobenzenesulfonyl chloride, reduction to f -nitrophenyl disulfide by hydriodic acid, 80... 

Elman in 2013 reported the synthesis of naphthalic anhydride (NAn) via the Pd(OAc)2-catalyzed oxidative carbonylation of aromatics with l<2S20g as the oxidant under 2 atm of CO at room temperature [37]. The subsequent alkahne hydrolysis of naphthalic anhydride and isomerization of the obtained 1,8-naphthalenedicarboxylic acid salt are known to generate the NDA. 

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