Synthesis and properties of substituted 1,6-dioxapyrene donors
摘要:
The synthesis of substituted 1,6-dioxapyrenes, 2b-g, from 2,6-dipropyl-1,5-naphthalenediol (7a) or 2,6-dimethyl-1,5-naphthalenediol (7b) is described. Diol 7a was prepared by Claisen allylic rearrangement followed by reduction, and 7b was prepared by Mannich reaction of 1,5-naphthalenediol followed by base-promoted hydrogenolysis. The 1,6-dioxapyrenes can be oxidized to stable cation radicals at +0.2-0.35 V vs SCE and to dications at +0.8-1.20 V. The preparation of some tetracyanoquinodimethane salts and binary cation radical salts of the 1,6-dioxapyrenes is reported.
알콕시실릴기 및 활성 에스테르기를 갖는 화합물, 이의 제조방법, 이를 포함하는 조성물 및 용도
申请人:KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY 한국생산기술연구원(319999029382) BRN ▼119-82-01008
公开号:KR20170092468A
公开(公告)日:2017-08-11
본 발명은 에폭시 조성물의 경화시에 향상된 저흡습성 및/또는 저유전특성을 나타내지만, 열팽창 특성의 손실을 동반하지 않는 알콕시실릴기 및 활성 에스테르기를 갖는 새로운 화합물, 이의 제조방법, 이를 포함하는 조성물 및 용도에 관한 것이다. 본 발명에 의하면, 화학식 AF 내지 LF의 알콕시실릴기 및 활성 에스테르기를 갖는 새로운 화합물, 이의 제조방법, 이를 포함하는 조성물 및 이의 용도가 개시된다.
COMPOUND HAVING ALKOXYSILYL GROUP AND ACTIVE ESTER GROUP, METHOD FOR PREPARING SAME, COMPOSITION COMPRISING SAME, AND USE
申请人:KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
公开号:US20200165275A1
公开(公告)日:2020-05-28
The present invention relates to a novel compound having an alkoxysilyl group and an active ester group, a method for preparing the same, a composition comprising the same, and a use, wherein the novel compound exhibits improved low moisture absorption and/or low dielectric properties when cured as an epoxy composition, but is not accompanied by loss of thermal expansion characteristics. Disclosed are a novel compound of formulae AF to LF having an alkoxysilyl group and an active ester group, and a method for preparing the same, a composition comprising the same, and a use of same.
Inexpensive and rapid hydrogenation catalyst from CuSO4/CoCl2 — Chemoselective reduction of alkenes and alkynes in the presence of benzyl protecting groups
作者:Mario Ficker、Søren W. Svenningsen、Thomas Larribeau、Jørn B. Christensen
DOI:10.1016/j.tetlet.2018.02.026
日期:2018.3
The simple reduction of a number of alkenes and alkynes was performed with a typical reaction time of 20 min using a copper-cobalt catalytic system. The reduction did not cleave benzyl protecting groups which are usually vulnerable to catalytic hydrogenation reactions. The catalyst can be prepared in situ by reduction of the inexpensive precursor salts CuSO4 and CoCl2 with NaBH4. Sodium borohydride
Naphthylenyl compounds for long-acting injectable compositions and related methods
申请人:Alkermes Pharma Ireland Limited
公开号:US10799496B2
公开(公告)日:2020-10-13
The present invention provides compounds useful for the treatment of opioid dependence, alcohol dependence, alcohol use disorder, or the prevention of relapse to opioid dependence in a subject in need thereof. Related pharmaceutical compositions and methods are also provided herein.
Compound having alkoxysilyl group and active ester group, method for preparing same, composition comprising same, and use
申请人:KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
公开号:US11214583B2
公开(公告)日:2022-01-04
The present invention relates to a novel compound having an alkoxysilyl group and an active ester group, a method for preparing the same, a composition comprising the same, and a use, wherein the novel compound exhibits improved low moisture absorption and/or low dielectric properties when cured as an epoxy composition, but is not accompanied by loss of thermal expansion characteristics. Disclosed are a novel compound of formulae AF to LF having an alkoxysilyl group and an active ester group, and a method for preparing the same, a composition comprising the same, and a use of same.
本发明涉及一种具有烷氧基硅烷基团和活性酯基团的新型化合物、制备方法、包含该化合物的组合物以及用途,其中,该新型化合物在作为环氧组合物固化时,具有更好的低吸湿性和/或低介电性能,但不会伴随热膨胀特性的丧失。本发明公开了一种具有烷氧基硅烷基和活性酯基的式 AF 至 LF 的新型化合物,以及制备该化合物的方法、包含该化合物的组合物及其用途。