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2-Methyl-2-(trimethyl­silyl­oxy)-3,4-dihydro-2H,5H-pyrano[3,2-c][1]benzopyran-5-one

✍ Scribed by Peng, Da-Quan ;Liu, Yun ;Lu, Zhi-Feng ;Xu, Jian-Hua

Publisher
International Union of Crystallography
Year
2005
Tongue
English
Weight
111 KB
Volume
61
Category
Article
ISSN
1600-5368

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✦ Synopsis

The structure of (I), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level.

📜 SIMILAR VOLUMES

2-Methyl-4-phenyl-2-(trimethyl­silyl­oxy
2-Methyl-4-phenyl-2-(trimethyl­silyl­oxy)-3,4-dihydro-2H-naphtho[2,3-b]pyran-5,10-dione
✍ Peng, Da-Quan 📂 Article 📅 2006 🏛 International Union of Crystallography 🌐 English ⚖ 160 KB

In the title compound, C 23 H 24 O 4 Si, the naphthalene ring system is essentially planar. The conformation of the dihydropyran ring is very similar to a half-chair form. There are intermolecular C-HÁ Á ÁO interactions andstacking interactions in the crystal structure.

Synthesis of 2,5,8-trimethyl-3,4-dihydro
Synthesis of 2,5,8-trimethyl-3,4-dihydro-1(2H)-naphthalenone-2-d and 3,5,8-trimethyl-3,4-dihydro-1(2H)-naphthalenone-2,2-d2
✍ E. J. Eisenbraun; B. Dewprashad; P. W. Geno; A. R. Taylor 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 French ⚖ 168 KB

## Abstract The synthesis of specifically labeled 2,5,8‐trimethyl‐3,4‐dihydro‐1(2H)‐naphthalenone‐2‐d and 3,5,8‐trimethyl‐3,4‐dihydro‐1(2H)‐naphthalenone‐2,2‐d~2~ through α‐proton exchange using neat trifluoroacetic acid‐d is described.