Nucleophilic Reactions at Tertiary Carbon. Part 2. ?- and ?-routes to the 8-hydrindanyl cation
作者:Konrad B. Becker、Andr� F. Boschung、Cyril A. Grob
DOI:10.1002/hlca.19730560809
日期:1973.12.12
Stereoisomeric ion pairs are implicated as intermediates in the solvolysis of cis and trans-8-hydrindanyl chloride 3, whereas 4-(cyclopenten-1-yl)butyl tosylate 5 appears to cyclize by way of an unsymmetrically solvated 8-hydrindanyl cation. This follows from the solvolysis products and rates of these compounds in aqueous solvents.
Light-induced reaction of boracyclanes with bromine in the presence of water. Ring contraction of boracyclanes to produce carbocyclic structures
作者:Yoshinori Yamamoto、Herbert C. Brown
DOI:10.1039/c39730000801
日期:——
Six-membered boracyclanes undergo ringcontraction to produce the corresponding five-membered carbocyclic compounds by treatment with bromine in the presence of water.
通过在水的存在下用溴处理,六元Boracyclanes进行环收缩以生成相应的五元碳环化合物。
Christol,H.; Solladie,G., Bulletin de la Societe Chimique de France, 1966, p. 3193 - 3200
作者:Christol,H.、Solladie,G.
DOI:——
日期:——
Electroorganic chemistry. 140. Electroreductively promoted intra- and intermolecular couplings of ketones with nitriles.
Electroreduction of gamma and delta-cyano ketones in i-PrOH with Sn cathode gave alpha-hydroxy ketones and their dehydroxylated ketones as the intramolecularly coupled products. Guaiazulene, (-)-valeranone, polyquinanes, dihydrojasmone, methyl dihydrojasmonate, and rosaprostol have been synthesized by utilizing this electroreductive intramolecular coupling of gamma and delta-cyano ketones in one of the key steps. Similarly, electroreduction of a mixture of ketone and nitrile gave the corresponding intermolecularly coupled product. The product obtained by the electroreductive intermolecular coupling of (+)-dihydrocarvone with acetonitrile has been found to be the precursor of an effective chiral ligand for the enantioselective addition of diethylzinc to aldehydes.
Selective functionalization of hydrocarbons. 6. Mechanistic and preparative studies on the regio- and stereoselective paraffin hydroxylation with peracids