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4,4′-(Hexafluoro­isopropyl­idene)bis(phthalic anhydride)

✍ Scribed by Zhong, Rui-Qin ;Zou, Ru-Qiang ;Xu, Qiang

Publisher
International Union of Crystallography
Year
2006
Tongue
English
Weight
183 KB
Volume
62
Category
Article
ISSN
1600-5368

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📜 SIMILAR VOLUMES

Polyimidines. XI. Polyimidines from 3,3′
Polyimidines. XI. Polyimidines from 3,3′,4,4′-benzophenonetetracarboxylic dianhydride and 4,4′-(hexafluoroisopropylidene) diphthalic anhydride
✍ Maryanne Mores; Patrick E. Cassidy 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 670 KB

## Abstract Two new bis(benzylidenephthalide)monomers were synthesized by melt condensation of phenylacetic acid with 3,3′,4,4′‐benzophenonetetracarboxylic dianhydride (BTDA) and with 4,4′‐(hexafluoroisopropylidene)diphthalic anhydride (6FDA). A mixture of three isomers for each monomer was obtaine

2-Hydr­oxy-2′-(4-isopropyl­benzyl­idene)
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✍ Yang, Jian-Guo ;Pan, Fu-You 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 444 KB

The title compound, C 17 H 18 N 2 O 2 , was synthesized by the reaction of 2-hydroxybenzoylhydrazine with 4-isopropylbenzaldehyde in ethanol. The molecule is non-planar and the dihedral angle between the two aromatic rings is 21.9 (2) . The crystal structure involves intermolecular O-HÁ Á ÁO and int

4-Benzyl­idene-2-(isopropyl­amino)-1-phe
4-Benzyl­idene-2-(isopropyl­amino)-1-phenylimidazolin-5(4H)-one
✍ Sun, Shao-Fa 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 195 KB

In the title compound, C 19 H 19 N 3 O, the five-membered imidazolone ring is essentially planar, and the packing of the molecules in the crystal structure is mainly due to intermolecular N-HÁ Á ÁO hydrogen-bonding interactions, which link the molecules into chains.

2,4-Dimethyl-3,4-O-isopropyl­idene-l-ara
2,4-Dimethyl-3,4-O-isopropyl­idene-l-arabinono-1,5-lactone
✍ Booth, Kathrine V. ;Watkin, David J. ;Jenkinson, Sarah F. ;Fleet, George W. J. 📂 Article 📅 2007 🏛 International Union of Crystallography 🌐 English ⚖ 275 KB

The relative configuration at C-2 of 2,4-dimethyl-3,4-__O__-isopropylidene-L-arabinono lactone, C~10~H~16~O~5~, which exists in the boat form, was unequivocally established by X-ray crystallographic analysis. The absolute configuration was determined by the use of 2-__C__-methyl-D-ribonolactone as a

4-Isopropyl-2-(4-methoxy­benzyl­idene)-3
4-Isopropyl-2-(4-methoxy­benzyl­idene)-3,4-dihydro­naphthalen-1(2H)-one
✍ Al Houari, Ghali ;Kerbal, Abdelali ;El Bali, Brahim ;Bolte, Michael 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 93 KB

The title compound, C 21 H 22 O 2 , has the exocyclic C C double bond in an E configuration. The isopropyl group is attached in an axial position to the cyclohexenone ring.