Electrophilic reaction at single bonds. 21. Superacid-catalyzed alkylation of adamantane
作者:George A. Olah、Omar Farooq、V. V. Krishnamurthy、G. K. Surya Prakash、Khosrow Laali
DOI:10.1021/ja00311a052
日期:1985.12
Les alkyladamantanes obtenus montrent que la reaction se produit selon deux voies: a) une adamantylation des olefines par le cation adamantyle forme par enlevement d'hydrure a partir de l'adamantane par les cations alkyles et; b) une σ-alkylation directe de l'adamantane par les cations alkyles via insertion dans la liaison C 1 -H de l'adamantane par l'intermediaire d'un ion carbonium pentacoordine
Lesalkyladamantanes obtenus montrent que la reaction se produit selon deux voies: a) une adamantylation des olenes par le cation adamantyle forme par enlevement d'hydrure a partir de l'adamantane par les cations calles et; b) 通过插入和连接 C 1 -H de l'adamantane par l'un ion carbonium pentacoordine 的 une σ-烷基化指示 de l'adamantane par les cations 烷基
SYNTHESIS AND SOME REACTIONS OF 1-ADAMANTYL TRIFLUOROMETHANESULFONATE
1-Adamantyl trifluoromethanesulfonate (1) has been prepared from 1-bromoadamantane and silver trifluoromethanesulfonate in 2,2-dimethylbutane. The trifluoromethanesulfonate (1) abstracts hydride from pentane or hexane to form adamantane, initiates ring-opening polymerization of tetrahydrofuran, and reacts with alkyllithiums to afford 1-alkyladamantanes.
Novel tetramers of 1,3-adamantane and 5,7-dibutyl-1,3-adamantane were synthesized by the coupling reaction of 3-bromo-1,1′-biadamantane or 3-bromo-5,5′,7,7′-tetrabutyl-1,1′-biadamantane with sodium in n-octane or with magnesium in diethyl ether. Although the former 1,3-adamantane tetramer showed poor solubility in organic solvents, the latter tetrameric 5,7-dibutyl-1,3-adamantane was readily soluble
Benzoxazole Resin Precursor, Polybenzoxazole Resin, Resin Film And Semiconductor Device
申请人:Enoki Takashi
公开号:US20080206548A1
公开(公告)日:2008-08-28
A benzoxazole resin precursor comprising a first repeating unit which is obtained by the reaction of a bisaminophenol compound and a dicarboxylic acid compound, at least one of which has the diamondoid structure; a benzoxazole resin precursor further comprising a second repeating unit which is obtained by the reaction of a bisaminophenol compound having no diamondoid structure and a dicarboxylic acid compound having no diamondoid structure; a polybenzoxazole resin obtained by the ring-closing reaction with dehydration of the above benzoxazole resin precursor; a resin film constituted with the benzoxazole resin precursor or the polybenzoxazole resin. A polybenzoxazole resin and a resin film having excellent heat resistance and a small permittivity and a semiconductor device using the resin film can be obtained from the benzoxazole resin precursor.
Benzoxazole resin precursor, polybenzoxazole resin, resin film and semiconductor device
申请人:Sumitomo Bakelite Co., Ltd.
公开号:US08337982B2
公开(公告)日:2012-12-25
A benzoxazole resin precursor comprising a first repeating unit which is obtained by the reaction of a bisaminophenol compound and a dicarboxylic acid compound, at least one of which has the diamondoid structure; a benzoxazole resin precursor further comprising a second repeating unit which is obtained by the reaction of a bisaminophenol compound having no diamondoid structure and a dicarboxylic acid compound having no diamondoid structure; a polybenzoxazole resin obtained by the ring-closing reaction with dehydration of the above benzoxazole resin precursor; a resin film constituted with the benzoxazole resin precursor or the polybenzoxazole resin. A polybenzoxazole resin and a resin film having excellent heat resistance and a small permittivity and a semiconductor device using the resin film can be obtained from the benzoxazole resin precursor.