Dedicated to Mordecai Rubin, Technion, Haifa, on the occasion of his 80th birthday The cycloadditions of methyl diazoacetate to 2,3-bis(trifluoromethyl)fumaronitrile ((E)-BTE) and 2,3-bis(trifluoromethyl)maleonitrile ((Z)-BTE) furnish the 4,5-dihydro-1H-pyrazoles 13. The retention of dipolarophile
Novel Highly Stereoselective Approach Toward (Z)-1,2-Bis(silyl)ethenes.
✍ Scribed by Piotr Pawluc; Bogdan Marciniec; Beata Dudziec; Grzegorz Hreczycho; Maciej Kubicki
- Publisher
- John Wiley and Sons
- Year
- 2007
- Weight
- 30 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0931-7597
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract A novel route towards the polyhydroxylated pyrrolizidine alkaloid (+)‐alexine has been developed. A key step in this synthesis is a highly stereoselective [3+2] annulation reaction of __N__‐Ts‐α‐amino aldehyde **7 a** (Ts=tosyl) and 1,3‐bis(silyl)propene **8 a** for the construction of
## Abstract Stereospecific synthesis of a family of novel (__E__)‐2‐aryl‐1‐silylalka‐1,4‐dienes or (__E__)‐4‐aryl‐5‐silylpenta‐1,2,4‐trienes via a cross‐coupling of (__Z__)‐silyl(stannyl)ethenes with allyl halides or propargyl bromide is described. In the reaction with allyl bromide, either a Pd(db