本发明提供了一种3‑羟甲基‑9‑取代咔唑的制备方法。于干燥的100mL三口烧瓶中,冰盐浴冷却下依次加入A mL DMSO、B mol多聚甲醛、C mol乙醇钠、D mL无水乙醇,搅拌,固体溶解后,快速滴入E mol N‑烷基咔唑的DMSO溶液,A:E=(100~300):1,C:D=1:8,B:C:E=1:1.5:1,反应3 min后用几滴浓盐酸终止反应。然后加入蒸馏水,有固体析出,抽滤、水洗、干燥即得粗产品。粗品用无水乙醇重结晶得纯品3‑羟甲基‑9‑取代咔唑。本发明操作简单,反应时间短,产品纯度高,产率高,反应条件温和、安全环保,对该类化合物的合成及发展有重要意义。
Polymers photoconductive in the near infra-red
申请人:Yeda Research and Development Company Limited
公开号:US04562133A1
公开(公告)日:1985-12-31
There are provided photoconductive compounds wherein 3-substituted N-alkyl carbazole groups and 3,5-dinitrobenzoic acid moieties are attached directly or via spacer groups to a polymeric backbone. The photoconductive compounds can be used in devices based on the photoconductivity of such compounds, such as sensors or the like, said compounds being used in the form of a film or a coating. The maximum sensitivity of such sensors is in the IR region.
A novel palladium-catalyzed inward isomerization and hydraminocarbonylation of unactivated alkenes for the synthesis of α-aryl carboxylic amides has been developed. The combination isomerization-responsible catalyst and hydrocarbonylation-responsible catalyst was found to be a highly effective strategy to render the reaction feasible. The reaction shows highly functional group compatibility and site-selectivity
[EN] OPTICAL SENSOR WITH ELECTROLUMINESCENT LIGHT SOURCE AND POLYMER LIGHT DETECTOR<br/>[FR] DETECTEUR OPTIQUE A SOURCE DE LUMIERE ELECTROLUMINESCENTE ET A DETECTEUR DE LUMIERE POLYMERE
申请人:FCI-FIBERCHEM, INC.
公开号:WO1994017556A1
公开(公告)日:1994-08-04
(EN) An optical sensor (10) is produced with a polymer based light source (18) and/or polymer based light detector (28). An electroluminescent source (18) has a conducting polymer layer (20) or alternatively a phosphor layer (20). A detector (28), of either Schottky or heterojunction/hybrid type, has a photoconducing polymer layer (64) or adjacent conducting polymer (76) and semiconductor (78) layers where at least one is photoconducting.(FR) L'invention se rapporte à un détecteur optique (10) comprenant une source de lumière (18) polymère et/ou un détecteur de lumière (28) polymère. Une source électroluminescente (18) présente une couche polymère conductrice (20) ou, selon une variante, une couche de phosphore (20). Un détecteur (28) du type Schottky ou hybride/à hétérojonction, comprend une couche polymère photoconductrice (64), ou une couche polymère conductrice (76) et une couche semi-conductrice (78) adjacentes, dont au moins une est photoconductrice.