𝔖 Bobbio Scriptorium
✦   LIBER   ✦

4-Sulfonyl-1,6-dioxaspiro[4.5]decanes

✍ Scribed by Alonso, I. ;López-Solera, I. ;Raithby, P. R.

Book ID
114512211
Publisher
International Union of Crystallography
Year
1995
Tongue
English
Weight
304 KB
Volume
51
Category
Article
ISSN
0108-2701

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

Mass-spectrometric fragmentation of alky
Mass-spectrometric fragmentation of alkyl-1,6-dioxaspiro[4.5]decanes
✍ W. Francke; G. Hindorf; W. Reith 📂 Article 📅 1979 🏛 Springer 🌐 English ⚖ 178 KB

L. gave the gas chromatogram shown below [2]. Using a GC/MS-coupling system (Varian MAT 311A), in addition to nonanone-2, the spiroketals 1-4 could be 9 identified, all of which occurred as pairs of diastereomers [3]. According to [4], authentic samples were prepared for comparison.

Spiroketal equilibration: Interconversio
Spiroketal equilibration: Interconversion of 1,6-dioxaspiro[4.4]nonanes and 1,6-dioxaspiro[4.5]decanes. Implications for the synthesis of cephalostatin 7
✍ Jae Uk Jeong; P.L. Fuchs 📂 Article 📅 1994 🏛 Elsevier Science 🌐 French ⚖ 279 KB

Acid-catalyzed equilibration of spiroketals 5SHp6 and 55Haj3 involves a two stage process whereby the 1,6-dioxaspiro]4.4]nonanes can be equilibrated under mild conditions to a pair of 1,6\_dioxaspiro[45]decanes with preservation of the adjacent C-20 methyl stereocenter. Under more forcing conditions