✦ LIBER ✦

2- and 8- functionalized 1,4,7,10-tetraoxaspiro[5.5]undecanes.: III. Resolution of a (±)-E,E structure by enzymatic and chemical methods.

✍ Scribed by Marielle Lemaire; Georges Jeminet; Jean-Gabriel Gourcy; Gérard Dauphin

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 448 KB
Volume: 5
Category: Article
ISSN: 0957-4166
DOI: 10.1016/0957-4166(94)80121-5

No coin nor oath required. For personal study only.

✦ Synopsis

The optical resolution of a (f)-E,E-2,8-disubstituted-l,4,7,lO-tetraoxaspiro[5.5] undecane system was carried out by lipase-catalyzed hydrolysis of a symmetrical diester and also by monosubstitution with a chiral amine. Configurations of the new products were assigned by chemical correlations.

📜 SIMILAR VOLUMES

2- and 8- functionalized 1,4,7,10-tetrao

2- and 8- functionalized 1,4,7,10-tetraoxaspiro[5.5]undecanes. I. Synthesis of (±)-E,E and (±)-Z,E structures.

✍ Marielle Lemaire; Georges Jeminet; Jean-Gabriel Gourcy; Gérard Dauphin 📂 Article 📅 1993 🏛 Elsevier Science 🌐 French ⚖ 559 KB

A new Entry to Pyrazolo[4,3-e][1,4]diaze

A new Entry to Pyrazolo[4,3-e][1,4]diazeoines. Facile Synthesis of Pyrazolo[4,3-e][1,4]diazepin-5,8-diones, 5,6,7-Triones and Pyrazolo[4,3-e]pyrrolo-[1,2-a][1,4]diazepin-5,10-diones.

✍ Nalla Ram Reddy; Ghanta Mahesh Reddy; Padi Pratap Reddy 📂 Article 📅 2005 🏛 John Wiley and Sons ⚖ 29 KB 👁 1 views

Are 1,5- and 1,7-dihydrodiimidazo[4,5-b:

Are 1,5- and 1,7-dihydrodiimidazo[4,5-b:4′,5′-e]pyrazine the main products of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20) alkaline hydrolysis? A DFT study of vibrational spectra

✍ Yana Kholod; Sergiy Okovytyy; Gulnara Kuramshina; Mohammad Qasim; Leonid Gorb; J 📂 Article 📅 2006 🏛 Elsevier Science 🌐 English ⚖ 306 KB

Chemical modification of the trans,trans

Chemical modification of the trans,trans-germacranolide stizolicin synthesis, molecular, and crystal structure of 6α-acetoxy-13-methoxy-1,10; 4,5-diepoxy-1,5,7α(H),8,11β(H)-E,E-germacr-8,12-olide

✍ S. M. Adekenov; N. M. Gafurov; K. M. Turdybekov; S. V. Lindeman; Yu. T. Struchko 📂 Article 📅 1991 🏛 Springer 🌐 English ⚖ 587 KB

ChemInform Abstract: Synthesis and Struc

ChemInform Abstract: Synthesis and Structure of a New Heterocyclic System — 7,8-Dihydroimidazo[1,2-c][1,3]thiazolo[4,5-e]pyrimidine.

✍ A. P. Kozachenko; O. V. Shablykin; A. N. Vasilenko; A. N. Chernega; V. S. Brovar 📂 Article 📅 2012 🏛 John Wiley and Sons ⚖ 26 KB 👁 1 views

Nucleophilic addition to C,C double bond

Nucleophilic addition to C,C double bonds. III. Chemical reactivity of 1endo, 4endo: 5exo, 8exo-dimethano-1,2,3,4,4a,5,8,8a-octahydronaphthalen-10syn-ol and X-ray structure analysis of its p-nitrobenzoate

✍ Rolland A. Pfund; W. Bernd Schweizer; Camille Ganter 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 German ⚖ 400 KB

## Abstract The title compound **1** is a further example of an olefinic alcohol that undergoes ether formation under basic conditions **(→ 3)** although the double bond is not activated by an electron‐attracting group. This unusual reactivity is due to steric compression, which is increased in the