✦ LIBER ✦

Hemi-acetal stabilization of the chair-boat form in bicyclo[3.3.1]Nonanes. A 13c nmr investigation.

✍ Scribed by Th. Reints Bok; C. Kruk; W.N. Speckamp

Publisher: Elsevier Science
Year: 1978
Tongue: French
Weight: 203 KB
Volume: 19
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)85359-4

No coin nor oath required. For personal study only.

✦ Synopsis

In a preceding communication the hemi-acylal formation leading to a fixed chair-boat form 5 in bicyclo[3.3.l]nonanes has been discussed2). Aiming at a better understanding of this unusual phenomenon 31 two hydroxyketones capable of formation of the acetal derivative B were synthesized in which the eventual Y-Z OH bridge had been shortened by one carbon atom.

📜 SIMILAR VOLUMES

Through-space transmission of polar subs

Through-space transmission of polar substituent effects in the bicyclo[1.1.1]pentane ring system as monitored by 119Sn NMR chemical shifts: a 13C and 119Sn NMR study of 3-substituted-(X)bicyclo[1.1.1]pent-1-yltrimethylstannanes

✍ William Adcock; Alexander R. Krstic 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 279 KB 👁 3 views

A series of 3-substituted(X)bicyclo [ 1.1.1 ] pent-1-yltrimethylstannanes (3) were synthesized and their 119Sn and 13C NMR spectra were recorded. The 119Sn substituent chemical shifts (SCS) and the one-bond carbon-tin coupling constants [ 1J(13C,119Sn) ] were analyzed in terms of possible substituen