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1,1-Disilyl-2-Alkenes: Preparation and Some Synthetic Applications. Preliminary communication

✍ Scribed by Hansjürg Wetter

Publisher
John Wiley and Sons
Year
1978
Tongue
German
Weight
189 KB
Volume
61
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Allyl sulfides and a selenide are metallated and silylated with chloro (penta‐methyl)disilane. Treatment of the resulting disilanylmethyl sulfides 4 with trimethyloxonium tetrafluoroborate furnishes 1,1‐disilyl‐2‐alkenes 5 in good yields. Some synthetic possibilities of 5 are outlined.

📜 SIMILAR VOLUMES

High Syn Selectivity of a SE′ Reaction:
High Syn Selectivity of a SE′ Reaction: Acylation of an Optically Active 1,1-Disilyl-2-alkene. Preliminary communication
✍ Hansjürg Wetter; Paul Scherer; W. Bernd Schweizer 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 German ⚖ 295 KB

## Abstract The disilane/disilylmethane rearrangement of an optically active disilanyl sulfide **9B** was used to prepare an optically active disilylalkene **10** whose absolute configuration was established by X‐ray analysis of the bromo derivative **13** (__P__2~1~, __a__ = 7.847 (3) Å, __b__ = 9

1-Substituted 1,3-Dihydroisothianaphthen
1-Substituted 1,3-Dihydroisothianaphthen-2,2-dioxides: Preparation and Use as ortho-Quinodimethane Precursors in Intramolecular Cycloadditions. Preliminary communication
✍ Wofgang Oppolzer; David A. Roberts; T. Geoffrey C. Bird 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 German ⚖ 260 KB

## Abstract 1,3‐Dihydroisothianaphthen‐2,2‐dioxide **(1)** was readily converted to the 1‐substituted sulfones **3** by deprotonation and subsequent electrophilic attack (__Scheme 3__ and __Table__). The appropriate 1‐alkenyl‐ and 1‐alkenoyl‐sulfones **3** on heating at 213° to 240° underwent SO~2~