## Abstract The monobromocarbenoid derived from CH~2~Br~2~ and NaN(SiMe~3~)~2~ gives only __endo__ adducts 4, 5, and 6 with 1,5‐cyclooctadiene, but shows no selectivity with 1,3‐cyclooctadiene. A literature report of a high __endo__ adduct preference of cyclooctene cannot be duplicated, but cyclode
On the stereoselectivity of iodocarbene and -carbenoid additions to cyclic alkenes
✍ Scribed by Eckehard V. Dehmlow; Jörg Stütten
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- French
- Weight
- 303 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0040-4039
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📜 SIMILAR VOLUMES
N-Haloimides (1 -5) are used in two types of radical chain reactions: (i) the selective Ziegler bromination of allylic and benzylic positions [1], which are bromine atom chain reactions [2] and (ii) imidyl radical [3, 4] chain reactions like substitutions and especially additions to double bonds [5,
## Abstract Acylation of the carboline derivatives 6 and 9 with diketene affords the corresponding __N__‐(acetoacetyl)carbolines 7 and 10, respectively. While 10 can be converted into a 1:2.1 mixture of the title compounds 11 a and 11 b on treatment with oxalic acid, the cyclic acetal 7 can only be