The known keto nitrile 1 reacts with the phosphonate 2 to give the three isomers 3.4, and 5. Catalytic reduction of 4 affords 6 and 7a. By hydrolysis and subsequent estetificarion of 7r the corresponding methyl ester 7b is obtained. Dieckmaun condensation of 7b leads to the pseudoberbanes 9% 9b. The
Coordination Chemistry and Catalysis. Investigations on the Synthesis of Cyclooctatetraene by the Method of W. Reppe
✍ Scribed by Priv.-Doz. Dr. G. N. Schrauzer; P. Glockner; S. Eichler
- Publisher
- John Wiley and Sons
- Year
- 1964
- Tongue
- English
- Weight
- 654 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0044-8249
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✦ Synopsis
In addition to thermal isomerization, pyrolytic reactions also make it possible to convert alkenes into compounds (0.g. diols and triols) in which the functional groups are bound to certain carbon atoms depending on the boron heterocycles formed as intermediates.
The pyrolytic transformations of organoboranes are not limited to compounds containing B-C and B-H bonds. Well-defined B-N heterocycles can also be prepared from organic compounds containing boron-nitrogen bonds [60]. In the case of compounds containing oxygen in addition to boron, the possibilities of preparing the corresponding B -0 heterocycles appear to be slight. I n this case, boroxines are mostly formed instead of heterocycles containing boron and oxygen as well as carbon.
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## Abstract [14‐^14^C]‐__allo__‐berbane‐14‐ol: (7,8‐methylenedioxy‐14α‐hydroxy‐[14‐^14^C]‐__allo__‐berbane, [14‐^14^C]1 spec, act.: 405 MBq/mM) was synthesized in nine reaction steps from K^14^CN (overall radioactive yield: 2.8%).
amount of heat, to trifluorothioacetamide (2). On further thiolysis at 40 "C, compound ( 2) is converted into (3) within a period of two to three days. "C ## HzS CF3CSNH2 + H2S + HC1 --+ CF3CSSH + NH4CI ## 12) ( 3 )