134619-69-5

Upstream product

• 80735-94-0 1-Phenyl-3-buten-1-ol 
• 100-52-7 benzaldehyde 
• 762-72-1 allyl-trimethyl-silane 
• 1793-90-4 allyltriethylgermane 
• 61826-40-2 (2-phenylcyclopropyl)methanol 
• 7789-60-8 phosphorus tribromide 
• 1125-88-8 benzaldehyde dimethyl acetal 

Downstream Products

• 1515-78-2 buta-1,3-dien-1-ylbenzene 
• 157667-91-9 1-amino>-1-phenyl-3-butene 
• 16939-57-4 (E)-buta-1,3-dienylbenzene 
• 101775-07-9 tert-butyl-(1-phenyl-but-3-enyl)-amine 
• 13064-21-6 hepta-1,6-dien-4-ylbenzene 

Relevant academic research and scientific papers

In Situ Generated Gold Nanoparticles on Active Carbon as Reusable Highly Efficient Catalysts for a Csp3 ?Csp3 Stille Coupling

Gold nanoparticle catalysts are important in many industrial production processes. Nevertheless, for traditional Csp2-Csp2 cross-coupling reactions they have been rarely used and Pd catalysts usually give a superior performance. Herein we report that in situ formed gold metal nanoparticles are highly active catalysts for the cross coupling of allylstannanes and activated alkylbromides to form Csp3-Csp3 bonds. Turnover numbers up to 29 000 could be achieved in the presence of active carbon as solid support, which allowed for convenient catalyst recovery and reuse. The present study is a rare case where a gold metal catalyst is superior to Pd catalysts in a cross-coupling reaction of an organic halide and an organometallic reagent.

Method for synthesizing alkyne through catalytic asymmetric cross coupling (by machine translation)

The invention belongs to the field of, asymmetric synthesis, and discloses a method for catalyzing asymmetric cross- coupling to synthesize: an alkyne, and the L method comprises, the following steps, of A: preparing B a cuprous, salt and C a: ligand; preparing a catalyst; adding a base; reacting the compound with the compound with the compound; and reacting the compound with the compound. Of these, one of them, X is selected from the group consisting of, R halogens. 1 Optionally substituted heteroarylsulfonylcyanamide groups selected from the, group consisting, of optionally substituted, phenyl groups In-flight vehicle, R6 Trialkyl silyl groups or alkyl radicals, R2 Cycloalkyl radicals optionally substituted with an, optionally substituted alkyl, (CH radical2 )n R4 Multi,layer chain, n＝0-10,R saw blade4 A group selected, from, the group consisting of phenyl, alkenyl, aralkynyls, noonyloxy,and, noonylsulfonylsulfonylsulfonylsulfonylsulfonylsulfonylsulfonylsulfonylsulfonylsulphonylsulphonylsulphonylsulphonylsulphonylsulphonylsulphonylsulphonylsulphonylsulphonylphenyl disiloxy-radicals. R3 A ligand, selected from hydrogen or any of the functional groups, is selected from the group consisting of, hydrogen and any L other functional group. The method, R disclosed by the, A invention has the, advantages of good catalytic, R ’ effect, wide application range. and high catalytic efficiency, and the, method disclosed by the, invention has the. advantages of good catalytic effect, wide application range and high catalytic efficiency. (by machine translation)

A mild and efficient method for bromination of alcohols using α,α-dibromo-β-dicarbonyl compounds as halogen sources

Exploration of α,α-dibromo-β-dicarbonyl compounds as novel bromine agents for the conversion of alcohols to alkyl bromides under neutral conditions has been achieved. This method can be used for acid-sensitive substrates and allows the bromination of various primary and secondary alcohols to proceed at room temperature within a very short period of time.

Boron trihalide mediated haloallylation of aryl aldehydes and its application to the preparation of (E)-1,3-dienes

In the presence of boron trihalides, aryl aldehydes couple readily with allylmetals to afford haloallylated products. The reactions tolerate a variety of functional groups. Simple aqueous workup of haloallylation reactions, followed by treatment with 1,8-

Large scale enantiomeric synthesis, purification, and characterization of ω-unsaturated amino acids via a Gly-Ni(II)-BPB-complex

The enantiomeric syntheses of ω-unsaturated amino acids and β-substituted ω-unsaturated amino acids were accomplished by using Gly-Ni-2[N-(N′-benzylprolyl)amino]benzophenone (BPB) as a chiral auxiliary. The synthesis provides excellent yields and high diastereoselectivities. The product crystallization followed by isomer epimerization strategy makes the reaction practical and useful for large-scale preparations. Dialkylation of the Ni(II)-complex, which was designed for mechanistic considerations, revealed that high diastereoselectivity is obtained due to the thermodynamic conformational stability of the Ni(II)-complex. The assignment of absolute configuration was accomplished by NMR, which is supported by corresponding X-ray structure and optical rotation data. Both enantiomerically pure amino acids can be synthesized in this alkylation-hydrolysis two-step strategy in multi gram scales.

Photoinduced electron transfer (PET) promoted cyclisations of 1-[N-alkyl-N-(trimethylsilyl)methyl]amines tethered to proximate olefin: Mechanistic and synthetic perspectives

Upon PET reaction, amines of type 1 undergo efficient cyclisations to produce pyrrolidines and piperidines. Mechanistically, involvement of delocalised α-silylmethyl amine radical cation as reactive intermediate in such cyclisations are described.

Halogenative Allylation and Reduction of Aromatic Acetals by Double Substitution of Alkoxyl Groups in Acetal

In the presence of excessive amount of acetyl halide along with a catalytic amount of tin(II) halide, aromatic acetals react with allyltrimethylsilane or triethylsilane to give α-allylbenzyl halides or benzyl halides, respectively, in good to excellent yields.

Intermediates for the synthesis of benzoxazol- and benzothiazolamine derivatives, useful as anti-anoxic agents

Benzoxazol- and benzothiazolamine derivatives having anti-anoxic properties which compounds are useful in the treatment of anoxia. These compounds are produced from certain benzoxazol- and benzothizolamine intermediates.

Benzoxazol-and benzothiazolamine derivatives, useful as anti-anoxic agents

Benzoxazol-and benzothiazolamine derivatives having anti-anoxic properties which compounds are useful in the treatment of anoxia.