## Abstract magnified image 2‐Methyl‐2,5,6,11,12,13‐hexahydro 4H indazolo[5,4‐a]pyrrolo[3,4‐c]carbazole‐4‐one was synthesized utilizing a regioselective Diels‐Alder reaction with 5‐(1H‐indol‐2‐yl)‐2‐methyl‐6,7‐dihydro‐2H‐indazole and ethyl __cis__‐β‐cyanoacrylate. Acetic acid and YtBr~3~ were the b
Effect of 11β-substituents on the regioselective chlorination of estrogens with 2,3,4,5,6,6-hexachloro-2,4-cyclohexadienone
✍ Scribed by Hasrat Ali; Johan E. van Lier
- Book ID
- 116065939
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 429 KB
- Volume
- 59
- Category
- Article
- ISSN
- 0039-128X
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## Abstract Filicinic acid (5) was prepared in 75‐80% overall yield from 4,4‐dimethyl‐2‐cyclohexenone (1). The key intermediate, tetrachlorodienone 2, underwent facile substitution of both β‐chlorine substituents by methoxide affording the bis enol ether 3 which was converted into dichlorofilicinic