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13c-Methoxy-1,2,3,13c-tetra­hydro­dibenzo­[a,kl]xanthan-1-one

✍ Scribed by Pang, Ji-Yan ;Cai, Jiwen ;Tan, Duan-Ming ;Chen, Zhi-Peng ;Xu, Zun-Le

Publisher
International Union of Crystallography
Year
2002
Tongue
English
Weight
317 KB
Volume
58
Category
Article
ISSN
1600-5368

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✦ Synopsis

The title compound, C 21 H 16 O 3 , is a key intermediate in the design of chiral amines. It is composed of three benzene rings and two other six-membered rings with a common chiral C atom. Racemic dimers are generated by CÐHÁ Á ÁO hydrogen bonds, formed by phenyl CÐH groups and carbonyl O atoms.

📜 SIMILAR VOLUMES

2,3-Ep­oxy-13c-meth­oxy-1,13c-dihydro­di
2,3-Ep­oxy-13c-meth­oxy-1,13c-dihydro­dibenzo[a,kl]xanthan-1-one
✍ Chen, Zhi-Peng ;Tan, Duan-Ming ;Su, Cheng-Yong ;Xu, Zun-Le 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 303 KB

The title compound, C 21 H 14 O 4 , containing three chiral C atoms, is a key intermediate in the design of chiral alcohols. Racemic dimers are generated by C-HÁ Á ÁO hydrogen bonds formed between phenyl C-H groups and epoxy O atoms.

1-Oxo-13c-propoxy-1,13c-di­hydro­dibenzo
1-Oxo-13c-propoxy-1,13c-di­hydro­dibenzo­[a,kl]­xanthene
✍ Tan, Duan-Min ;Cai, Yue-Peng ;Liao, Miao-Fen ;Su, Cheng-Yong ;Xu, Zun-Le ;Kang, 📂 Article 📅 2001 🏛 International Union of Crystallography 🌐 English ⚖ 193 KB

The title compound, C 23 H 18 O 3 , is composed of ®ve rings with one chiral C atom. It crystallizes in the chiral space group P2 1 . with two molecules per asymmetric unit. These molecules are enantiomeric and exhibit normal geometry. The n-propoxy group in one of the pairs is disordered.

N-(2-Hydroxy­ethyl)-13c-meth­oxy-1-oxo-1
N-(2-Hydroxy­ethyl)-13c-meth­oxy-1-oxo-1,13c-dihydro­dibenzo[a,kl]xanthene-2-carboxamide
✍ Wang, Xiu-Zhen ;Xu, Zun-Le ;Deng, Dong-Sheng ;Lian, Zhao-Xun 📂 Article 📅 2005 🏛 International Union of Crystallography 🌐 English ⚖ 235 KB

The title compound, C 24 H 19 NO 5 , contains five fused rings, of which three are planar and the other two have twisted and flattened boat forms. The crystal structure is stabilized by intra-and intermolecular N-HÁ Á ÁO, O-HÁ Á ÁO and C-HÁ Á ÁO hydrogen bonds.

10-Hydro­xy-9-methoxy-5,6,13,13a-tetra­h
10-Hydro­xy-9-methoxy-5,6,13,13a-tetra­hydro[1,3]­dioxolo­[4,5-g]isoquino­[3,2-a]­isoquinolin-8-one
✍ Aree, Thammarat ;Singhana, Burapol ;Pakawatchai, Chaveng ;Chavasiri, Warinthorn 📂 Article 📅 2003 🏛 International Union of Crystallography 🌐 English ⚖ 392 KB

Single-crystal X-ray study T = 295 K Mean '(C±C) = 0.004 A Ê R factor = 0.052 wR factor = 0.113 Data-to-parameter ratio = 7.2 For details of how these key indicators were automatically derived from the article, see http://journals.iucr.org/e.

5,5a-Diallyl-5,5a,13,14-tetra­hydro-12H-
5,5a-Diallyl-5,5a,13,14-tetra­hydro-12H-di-1,3-benzimidazolo[1,2-a;1′,2′-c][1,4]diazepine
✍ Yıldırım, Sema Öztürk ;Akkurt, Mehmet ;Yılmaz, Ülkü ;Küçükbay, Hasan ;McKee, Vic 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 186 KB

The title compound, C 23 H 24 N 4 , was synthesized from 3,3 0diallyl-1,1 0 -propylenedi(benzimidazole) dibromide and NaH in tetrahydrofuran solution. In the molecule, the diazepine ring exhibits a boat conformation.