Synthesis of 4-oxazolinephenylboronic acid and heterobiaryl oxazolines via a Suzuki Reaction

2009 ◽  
Vol 2009 (4) ◽  
pp. 205-207 ◽  
Author(s):  
Samir Ghosh ◽  
A. Sanjeev Kumar ◽  
G.N. Mehta ◽  
R. Soundararajan ◽  
Subhabrata Sen
Keyword(s):  
Title Compound ◽  
Suzuki Reaction ◽  
Efficient Synthesis

An efficient synthesis of 4-oxazolinephenylboronic acid from 4-bromobenzoic acid is reported. The title compound couples with heteroaryl halides in presence of Pd(PPh3)4 and Na2CO3 in aqueous toluene to give heterobiaryl oxazolines.

A simple and efficient synthesis of 5′-(2H3)olivetol

1987 ◽  
Vol 65 (1) ◽  
pp. 189-190 ◽  
Author(s):  
Michel Girard ◽  
David B. Moir ◽  
John W. ApSimon
Keyword(s):  
Title Compound ◽  
Cross Coupling ◽  
Side Chain ◽  
Coupling Reactions ◽  
Efficient Synthesis ◽  
Cross Coupling Reactions

The title compound 1 was prepared in 13% overall yield starting from the commercially available and inexpensive 3,5-dimethoxybenzoic acid (4). The n-pentyl side chain was elaborated from cross-coupling reactions between halides.

Efficient synthesis of 2,3-dimethoxy-5-methyl-6-morpholinomethyl-1,4-benzoquinone hydrochloride

2015 ◽  
Vol 70 (4) ◽  
pp. 221-223 ◽  
Author(s):  
Jin Wang ◽  
Teng-huo-sheng Liao ◽  
Jian Yang
Keyword(s):  
Title Compound ◽  
Good Yield ◽  
Efficient Synthesis ◽  
Reaction Sequence

AbstractThe title compound (5) was prepared by a reaction sequence starting from 2,3,4,5-tetramethoxytoluene (1) via the Blanc reaction, oxidation and alkylation. The described method provides a good yield of the C-6 heterocyclic-substituted benzoquinone derivative and is suitable for the synthesis of other benzoquinone derivatives.

A synthesis of 2,2,2-Trichloroethyl 2-Acetamido-3,6-di-O-acetyl-2-deoxy-β-D-glucopyranoside

1977 ◽  
Vol 30 (12) ◽  
pp. 2689 ◽  
Author(s):  
JM McLaren ◽  
RV Stick ◽  
S Webb
Keyword(s):  
Acid Hydrolysis ◽  
Title Compound ◽  
Efficient Synthesis

The conversion of 2-acetamido-2-deoxy-D-glucose into 2-acetamido-3,4,6- tri-O-acetyl-2-deoxy-α-D-glucosyl chloride has been reinvestigated and the chloride transformed, with some modification of the literature method, into 2,2,2-trichloroethyl 2-acetamido-4,6-O-benzylidene-2- deoxy-β-D-glucoside. This compound has been converted into the title compound by the sequence acetylation, acid hydrolysis and selective acetylation. An efficient synthesis of benzyl 2,3-di-O-acetyl-β-D- galacto-pyranosideis reported and its unsuccessful selective acetylation contrasted with the above.

Synthesis and use of benzyl tert-butyl iminodicarbonate, a versatile reagent for the preparation of amines

1988 ◽  
Vol 53 (11) ◽  
pp. 2778-2786 ◽  
Author(s):  
Leif Grehn ◽  
Ulf Ragnarsson
Keyword(s):  
Benzyl Alcohol ◽  
Sodium Salt ◽  
Title Compound ◽  
Protecting Groups ◽  
Efficient Synthesis ◽  
Tert Butyl ◽  
Mild Conditions ◽  
High Yields ◽  
Versatile Reagent

An efficient synthesis of benzyl tert-butyl iminodicarbonate (IV), starting from benzoyl isocyanate, is reported. Reaction of the isocyanate with benzyl alcohol gave benzyl N-benzoylcarbamate (II) which on exhaustive tert-butoxycarbonylation via the non-isolated triacyl amine III, after aminolysis, provided the title compound. The sodium salt V was alkylated with various halides under Gabriel conditions to give in high yields the corresponding benzyloxycarbonyl tert-butoxycarbonyl diprotected amines. Similarly, compound IV was alkylated with alcohols under Mitsunobu conditions to give some additional amines of this type, from which the protecting groups can be removed selectively under mild conditions.

An Efficient Synthesis of Chalcones Based on the Suzuki Reaction.

ChemInform ◽  
2003 ◽  
Vol 34 (41) ◽  
Author(s):  
Said Eddarir ◽  
Nicole Cotelle ◽  
Youssef Bakkour ◽  
Christian Rolando
Keyword(s):  
Suzuki Reaction ◽  
Efficient Synthesis

Efficient synthesis of highly soluble doubly-bridged porphyrin-fullerene dyad

2003 ◽  
Vol 07 (09) ◽  
pp. 610-616 ◽  
Author(s):  
Alexander Efimov ◽  
Pirjo Vainiotalo ◽  
Nikolai V. Tkachenko ◽  
Helge Lemmetyinen
Keyword(s):  
Title Compound ◽  
High Yield ◽  
Efficient Synthesis ◽  
Wide Range

The double-linked porphyrin-fullerene dyad has been prepared in high yield. The title compound is soluble in a wide range of solvents with different polarity, such as n-pentane or benzonitrile.

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