[EN] PROCESS FOR THE PRODUCTION OF 1,3,3-TRIMETHYL-2-(3-METHYLPENT-2-EN-4-YNYL)CYCLOHEX-1-ENE<br/>[FR] PROCÉDÉ DE PRODUCTION DE 1,3,3-TRIMÉTHYL-2-(3-MÉTHYLPENT-2-ÉN-4-YNYL)- CYCLOHEX-1-ÈNE
申请人:DSM IP ASSETS BV
公开号:WO2012175396A1
公开(公告)日:2012-12-27
The present invention relates to an improved process for the production of 1,3,3-trimethyl-2-(3-methylpent-2-en-4-ynyl)cyclohex-1-ene, highly enriched in the Z-isomer, and the use of such compounds in organic syntheses, especially in processes forming intermediates (building blocks) the synthesis of vitamin A or β-carotene or other carotenoids, e.g. canthaxanthin, astaxanthin or zeaxanthin.
PROCESS FOR THE PRODUCTION OF 1,3,3-TRIMETHYL-2-(3-METHYLPENT-2-EN-4-YNYL)CYCLOHEX-1-ENE
申请人:Bonrath Werner
公开号:US20140323767A1
公开(公告)日:2014-10-30
The present invention relates to an improved process for the production of 1,3,3-trimethyl-2-(3-methylpent-2-en-4-ynyl)cyclohex-1-ene, highly enriched in the Z-isomer, and the use of such compounds in organic syntheses, especially in processes forming intermediates (building blocks) the synthesis of vitamin A or β-carotene or other carotenoids, e.g. canthaxanthin, astaxanthin or zeaxanthin.
Synthesis of Spirocyclic Tetrahydrofuran Derivatives of Monocyclonerolidol
作者:Karl H. Schulte-Elte、Thomas Umiker、G�nther Ohloff
DOI:10.1002/hlca.19800630129
日期:1980.1.23
Eighteen new sesquiterpenoid theaspirane derivatives 3–20, representing potential natural compounds, were synthesized from 1,2-didehydro-β-monocyclonerolidol (1). Their structure and configuration were determined by spectroscopic methods.