1647-16-1Relevant articles and documents
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Blomquist,Taussig
, p. 3505,3507 (1957)
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Ethenolysis reactions catalyzed by imido alkylidene monoaryloxide monopyrrolide (MAP) complexes of molybdenum
Marinescu, Smaranda C.,Schrock, Richard R.,Mueller, Peter,Hoveyda, Amir H.
, p. 10840 - 10841 (2009)
(Chemical Equation Presented) Monoaryloxide-pyrrolide (MAP) olefin metathesis catalysts of molybdenum that contain a chiral bitetralin-based aryloxide ligand are efficient for ethenolysis of methyl oleate, cyclooctene, and cyclopentene. Ethenolysis of 5000 equiv of methyl oleate produced 1-decene (1D) and methyl-9-decenoate (M9D) with a selectivity of >99%, yields up to 95%, and a TON (turnover number) of 4750 in 15 h. Tungstacyclobutane catalysts gave yields approximately half those of molybdenum catalysts, either at room temperature or at 50 °C, although selectivity was still >99%. Ethenolysis of 30000 equiv of cyclooctene to 1,9-decadiene could be carried out with a TON of 22500 at 20 atm (75% yield), while ethenolysis of 10000 equiv of cyclopentene to 1,6-heptadiene could be carried out with a TON of 5800 at 20 atm (58% yield). There is no reason to propose that the efficiency of ethenolysis has been maximized with the most successful catalyst reported here.
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Blomquist,Goldstein
, p. 1001 (1955)
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Luminescent tungsten(vi) complexes as photocatalysts for light-driven C-C and C-B bond formation reactions
Chan, Kaai-Tung,Che, Chi-Ming,Du, Lili,Liu, Yungen,Phillips, David Lee,To, Wai-Pong,Tong, Glenna So Ming,Wu, Liang-Liang,Yu, Daohong
, p. 6370 - 6382 (2020/07/15)
The realization of photocatalysis for practical synthetic application hinges on the development of inexpensive photocatalysts which can be prepared on a large scale. Herein an air-stable, visible-light-absorbing photoluminescent tungsten(vi) complex which can be conveniently prepared at the gram-scale is described. This complex could catalyse photochemical organic transformation reactions including borylation of aryl halides, such as aryl chloride, reductive coupling of benzyl bromides for C-C bond formation, reductive coupling of phenacyl bromides, and decarboxylative coupling of redox-active esters of alkyl carboxylic acid with high product yields and broad functional group tolerance.
Nickel-catalyzed deoxygenation of oxiranes: Conversion of epoxides to alkenes
Mori, Takamichi,Takeuchi, Yoshihito,Hojo, Makoto
supporting information, (2020/01/24)
Deoxygenation of epoxides takes place under the catalysis of nickel in the presence of diethylzinc as a deoxygenation agent to yield alkenes. Epoxides with a wide variety of substitution patterns are deoxygenated in this catalytic system to give terminal, 1,1-disubstituted, 1,2-disubstituted, trisubstituted, and tetrasubstituted alkenes in high yields. Reactions of 1,2-disubstituted epoxides we examined proceeded in an E-stereoselective manner. High compatibility with other functional groups through this transformation was also observed.
Method for synthesizing 1,9-decadiene
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Paragraph 0036; 0038; 0039, (2019/07/01)
The invention discloses a method for synthesizing 1,9-decadiene. The method sequentially comprises the following steps: adding carboxylic acid and 1,10-decadienol into a reaction container, heating the container until the 1,10-decadienol is dissolved, adding a catalyst, carrying out an esterification reaction at 120-200 DEG C, and collecting water evaporated in the esterification reaction; continuously heating the container to 300-350 DEG C after no water is produced in the esterification reaction, carrying out a reaction for 5-8 h, and evaporating and collecting a mixed solution of 1,9-decadiene and carboxylic acid; and respectively post-processing the mixed of 1,9-decadiene and carboxylic acid to obtain carboxylic acid and 1,9-decadiene respectively. The method for preparing 1,9-decadiene is efficient, economical and green, and meets industrial production requirements.