Silica gel-mediated hydrohalogenation of unactivated alkenes using hydrohalogenic acids under organic solvent-free conditions
作者:Kiyoshi Tanemura
DOI:10.1016/j.tetlet.2018.10.043
日期:2018.12
Silica gel-mediated hydrochlorination of unactivated alkenes using 35% hydrochloric acid underorganicsolvent-freeconditions proceeded to give the corresponding chlorides in good yields. Hydrobromination or hydriodination using 47% hydrobromic acid or 55% hydriodic acid afforded the corresponding halides, respectively. Silica gel could be recycled five times without any significant loss of activities
Rhodium-Catalyzed Generation of Anhydrous Hydrogen Iodide: An Effective Method for the Preparation of Iodoalkanes
作者:Chaoyuan Zeng、Guoli Shen、Fan Yang、Jingchao Chen、Xuexin Zhang、Cuiping Gu、Yongyun Zhou、Baomin Fan
DOI:10.1021/acs.orglett.8b02980
日期:2018.11.2
The preparation of anhydrous hydrogen iodide directly from molecular hydrogen and iodine using a rhodium catalyst is reported for the first time. The anhydrous hydrogen iodide generated was proven to be highly active in the transformations of alkenes, phenyl aldehydes, alcohols, and cyclic ethers to the corresponding iodoalkanes. Therefore, the present methodology not only has provided convenient access
The conversion of phenyltelluroalkanes to haloalkanes was studied in connection with the homologation of alkyl halides. Similar reactions of 1,1-bis(phenyltelluro)alkanes provided a new synthetic method of aldehydes.
The nickel-catalyzed three-component reductive carbonylation of alkylhalides, aryl halides, and ethyl chloroformate is described. The use of ethyl chloroformate as a safe and readily available source of CO provides an efficient and practical alternative for the synthesis of aryl-alkyl ketones.
描述了烷基卤化物、芳基卤化物和氯甲酸乙酯的镍催化三组分还原羰基化。使用氯甲酸乙酯作为一种安全且容易获得的 CO 来源,为芳基烷基酮的合成提供了一种有效且实用的替代方案。
Compound, photocurable composition, cured product of same, printing ink, and printed matter curing the printing ink
申请人:DIC Corporation
公开号:US11079675B2
公开(公告)日:2021-08-03
A novel compound is used as a novel photopolymerization initiator, the novel compound having a molecular structure represented by general formula 1 below
[R1 represents an alkyl group having 1 to 10 carbon atoms, R2 represents an alkyl group having 1 to 12 carbon atoms or the like, R3 represents an alkyl group having 1 to 12 carbon atoms or the like, R4 to R7 each independently represent a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, or the like, Y1 represents an alkyl group having 3 to 19 carbon atoms or the like, Y2 represents an organic linking group, X1 represents an ethylene group or the like, X2 and X3 each represent an ethylene group or the like, Y3 represents a single bond or an alkylidene group, and n represents an integer of 1 to 3].