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Silica Nanoarchitectures with Tailored Pores Based on the Hybrid Three- and Four-Membered Rings

✍ Scribed by Zhang, Dongju; Zhang, R. Q.


Book ID
126057300
Publisher
American Chemical Society
Year
2006
Tongue
English
Weight
319 KB
Volume
110
Category
Article
ISSN
0022-3654

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✍ Paryzek, Zdzislaw ;Błaszczyk, Krzysztof 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 594 KB

## Abstract Diastereomeric [(3__S__)‐5α]‐ and [(3__R__)‐5α]‐2′,2′‐dichlorospiro‐[cholestane‐3,1′‐cyclobutan]‐3′‐ones (1 and 2), prepared by cycloaddition reaction of dichloroketene with 3‐methylene‐5α‐cholestane, served as starting material for the synthesis of the related spirane derivatives. Thus