61052-15-1Relevant articles and documents
Method for synthesizing photoactive bromohydrin compound
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Paragraph 0182-0185, (2021/07/21)
The invention discloses a method for synthesizing a photoactive bromohydrin compound, which comprises the following steps: reacting cinnamyl alcohol as shown in a formula I, benzamide bromide as shown in a formula II, a quinine derivative, L-camphorsulfonic acid and water in a first organic solvent to obtain the bromohydrin compound as shown in a formula III. According to the method, raw materials are easy to synthesize, reaction conditions are mild, operation is easy and convenient, the yield reaches up to 47%-87%, enantioselectivity can generally reach 80% or above, and the highest point can even reach 95%.
SYNTHESIS OF FUNCTIONALIZED AND UNFUNCTIONALIZED OLEFINS VIA CROSS AND RING-CLOSING METATHESIS
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Paragraph 0020; 0025, (2015/11/09)
The invention is directed to the cross-metathesis and ring-closing metathesis reactions between geminal disubstituted olefins and terminal olefins, wherein the reaction employs a Ruthenium or Osmium metal carbene complex. Specifically, the invention relates to the synthesis of alpha-functionalized or unfunctionalized olefins via intermolecular cross-metathesis and intramolecular ring-closing metathesis using a ruthenium alkylidene complex. The catalysts preferably used in the invention are of the general formulawherein:M is ruthenium or osmium;X and Xare each independently an anionic ligand;L is a neutral electron donor ligand; and,R, RR, R, R, and Rare each independently hydrogen or a substituent selected from the group consisting of C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, aryl, C1-C20 carboxylate, C1-C20 alkoxy, C2-C20 alkenyloxy, C2-C20 alkynyloxy, aryloxy, C2-C20 alkoxycarbonyl, C1-C20 alkylthio, C1-C20 alkylsulfonyl and C1-C20 alkylsulfinyl.
A newly-designed PE-supported arsine for efficient and practical catalytic Wittig olefination
Wang, Peng,Liu, Chun-Rong,Sun, Xiu-Li,Chen, Shuai-Shuai,Li, Jun-Fang,Xie, Zuowei,Tang, Yong
supporting information; experimental part, p. 290 - 292 (2012/01/06)
A newly designed PE-supported arsine has been developed as an excellent catalyst for catalytic Wittig-type olefination. Simple ketones, in particular inactive ketones prove to be suitable substrates for the first time. This reaction provides an easy access to di-, tri-, and tetra-substituted olefins in high yield.