✦ LIBER ✦

Synthesis and resolution of the enantiomeric trans,trans-spiro[5.5]undecane-1,7-diols and determination of their absolute configuration; (S)-(−)-spiro[5.5]undecane-1,7-dione

✍ Scribed by Rüdiger Brünner; Hans Gerlach

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 570 KB
Volume: 5
Category: Article
ISSN: 0957-4166
DOI: 10.1016/0957-4166(94)80132-0

No coin nor oath required. For personal study only.

✦ Synopsis

Syntheses of spiro[S.S]undecane-1,7-dione (1) and the three diastereomeric

📜 SIMILAR VOLUMES

Preparation of optically active 3,9-disu

Preparation of optically active 3,9-disubstituted spiro[5.5]undecane derivatives and the determination of their absolute configuration

✍ Ursula Böhm; Gundula Voss; Günter Moller; Hans Gerlach 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 701 KB

Synthesis and Evaluation of New 1,7-Diox

Synthesis and Evaluation of New 1,7-Dioxaspiro[5.5]undecane Ligands: Implications for the Use of Diols in the Desymmetrization of meso Epoxides

✍ Debasis Patra; Lihua Yang; Nancy I. Totah 📂 Article 📅 2000 🏛 Elsevier Science 🌐 French ⚖ 172 KB

The synthesis and preliminary evaluation of two new chiral 1,7-dioxaspiro[5.5]undecane ligands is described. The compounds of interest are readily available in enantiomerically pure form. Chiral organotitanium complexes prepared from these ligands catalyze the ring opening reaction of meso epoxides

ChemInform Abstract: Synthesis and Evalu

ChemInform Abstract: Synthesis and Evaluation of New 1,7-Dioxaspiro[5.5]undecane Ligands: Implications for the Use of Diols in the Desymmetrization of meso Epoxides.

✍ Debasis Patra; Lihua Yang; Nancy I. Totah 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 33 KB 👁 1 views

ChemInform Abstract: An Efficient Synthe

ChemInform Abstract: An Efficient Synthesis of 7,11-Diarylspiro[5.5]undecane-1,9-dione by the Michael Condensation under Ultrasound Irradiation in Aqueous and Organic Two Phase in the Presence of Phase-Transfer Catalyst.

✍ Ji-Tai Li; Xin-Li Zhai; Zhi-Ping Lin; Xiao-Hui Zhang 📂 Article 📅 2009 🏛 John Wiley and Sons ⚖ 28 KB 👁 1 views

ChemInform Abstract: An Efficient and Hi

ChemInform Abstract: An Efficient and Highly Stereoselective Synthesis of cis-1-Acetyl-2-aryl-6,6-dimethyl-5,7-dioxo-spiro-[2,5]-4,8-octadiones and β,γ-trans-β-Acetyl-γ-aryl-butyrolactones.

✍ Weiguo Cao; Weiyu Ding; Yali Chen; Jinsen Gao 📂 Article 📅 2001 🏛 John Wiley and Sons ⚖ 33 KB 👁 2 views

The absolute configuration of cis, trans

The absolute configuration of cis, trans- 1,5-cyclooctadiene. Determination of enantiomeric purity without knowledge of the maximum optical rotation and without the aid of an auxiliary optically active substance.

✍ J. Leitich 📂 Article 📅 1978 🏛 Elsevier Science 🌐 French ⚖ 222 KB

Stiftstrasse 34-36, D-4330 Miilheim a.d. Ruhr (-)-cis,trans-1,5-cyclooctadiene (l), prepared by resolution of the racemic diene (11, was transformed into (+)-trans-1,2\_cyclooctanediol (3) according to scheme I. R-(-)-l\_ OS04 (IS, 2S)-(+I-2 \n H#d ,\*\\\O H