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Benzyl Mercaptan

The Experts below are selected from a list of 282 Experts worldwide ranked by ideXlab platform

Qianjin Li – 1st expert on this subject based on the ideXlab platform

  • one pot synthesis of amphiphilic janus gold nanoparticles with d penicillamine and Benzyl Mercaptan ligands by toluene water emulsion reaction
    Applied Surface Science, 2019
    Co-Authors: Degui Li, Chengliang Hu, Qianjin Li

    Abstract:

    Abstract Amphiphilic Janus Au NPs were synthesized by emulsion reaction with presence of d -penicillamine (D-PA) and Benzyl Mercaptan (BM) molecules at water and toluene phases, respectively. TEM and XRD characterizations indicate that the reaction product is composed of Au nanocrystals in size of 2.9 nm. XPS, FTIR, Raman and 1H NMR analyses suggest that the capping ligands on the Au NPs are D-PA and BM, where the ratio of D-PA to BM is ca. 1.7. Contact angle measurement and NOESY analysis further reveal that the hydrophilic D-PA and lipophilic BM are separated into two distinct hemispheres on the individual Au NPs. The simple and efficient approach allows large scale preparation of amphiphilic Janus Au NPs at low cost for versatile applications, such as drug delivery, vapor sensors and heterogeneous catalysts.

  • One-pot synthesis of amphiphilic Janus gold nanoparticles with d-penicillamine and Benzyl Mercaptan ligands by toluene/water emulsion reaction
    Applied Surface Science, 2019
    Co-Authors: Degui Li, Chengliang Hu, Qianjin Li

    Abstract:

    Abstract Amphiphilic Janus Au NPs were synthesized by emulsion reaction with presence of d -penicillamine (D-PA) and Benzyl Mercaptan (BM) molecules at water and toluene phases, respectively. TEM and XRD characterizations indicate that the reaction product is composed of Au nanocrystals in size of 2.9 nm. XPS, FTIR, Raman and 1H NMR analyses suggest that the capping ligands on the Au NPs are D-PA and BM, where the ratio of D-PA to BM is ca. 1.7. Contact angle measurement and NOESY analysis further reveal that the hydrophilic D-PA and lipophilic BM are separated into two distinct hemispheres on the individual Au NPs. The simple and efficient approach allows large scale preparation of amphiphilic Janus Au NPs at low cost for versatile applications, such as drug delivery, vapor sensors and heterogeneous catalysts.

Manabu Node – 2nd expert on this subject based on the ideXlab platform

  • development of a novel Benzyl Mercaptan as a recyclable odorless substitute of hydrogen sulfide
    Synlett, 2007
    Co-Authors: Manabu Matoba, Tetsuya Kajimoto, Manabu Node

    Abstract:

    2,4,6-TrimethoxyBenzyl Mercaptan ( 4) was developed as an odorless substitute of hydrogen sulfide to afford β-mercapto -carbonyl compounds in a Michael addition and to convert alkyl -bromides into alkanethiols. DetrimethoxyBenzylation of the -Michael adducts prepared from 4 and α,β-unsaturated esters or -ketones was facilely carried out by treatment with a solvent mixture of trifluoroacetic acid and toluene to give β-mercapto carbonyl compounds. Successive alkaline hydrolysis of 2,4,6-trimethoxyBenzyl iso-thiouronium salt, which was obtained as a side product, regenerated 4 accompanying disulfide 8 in good yield. The disulfide 8 was also converted into 4 by reduction with LiAlH 4 . A similar -protocol was -applicable to the synthesis of alkanethiols using the S N 2 reaction of alkyl bromides. Our method could be complementary to the classical method of using malodorous Benzyl Mercaptan as a nucleophile and Birch reduction for deBenzylation.

  • synthetic equivalents of benzenethiol and Benzyl Mercaptan having faint smell odor reducing effect of trialkylsilyl group
    Tetrahedron Letters, 2002
    Co-Authors: Kiyoharu Nishide, Tetsuo Miyamoto, Kamal Kumar, Shinichi Ohsugi, Manabu Node

    Abstract:

    Syntheses and odor tests of the trialkylsilylated Benzyl Mercaptans and benzenethiols have revealed that the trimethylsilyl substituent on the benzene ring has a remarkable effect in reducing the foul smell of the parent Benzyl Mercaptan and benzenethiol. Protodesilylation allowed these silylated thiols to function as odorless synthetic equivalents of Benzyl Mercaptan and benzenethiol. This discovery will greatly improve the physical environment of the researcher working with these malodorous compounds.

  • Odorless substitutes for foul-smelling thiols: syntheses and applications
    Tetrahedron Letters, 2001
    Co-Authors: Manabu Node, Kiyoharu Nishide, Kamal Kumar, Shinichi Ohsugi, Tetsuo Miyamoto

    Abstract:

    Several alkanethiols and p-alkylphenylmethanethiols were synthesized, and their odors were compared with those of ethanethiol and Benzyl Mercaptan by human and instrumental sensors. Among the various thiols analyzed, 1-dodecanethiol (1) and p-heptylphenylmethanethiol (3) were revealed to be odorless. 1-Dodecanethiol (1) has been used instead of ethanethiol for dealkylation of ethers, and p-heptylphenylmethanethiol (3) can replace Benzyl Mercaptan in the preparation of a 1,3-mercapto alcohol from an α,β-unsaturated ketone. These odorless thiols will greatly improve the physical environment of the researcher working with these foul-smelling compounds.

Degui Li – 3rd expert on this subject based on the ideXlab platform

  • one pot synthesis of amphiphilic janus gold nanoparticles with d penicillamine and Benzyl Mercaptan ligands by toluene water emulsion reaction
    Applied Surface Science, 2019
    Co-Authors: Degui Li, Chengliang Hu, Qianjin Li

    Abstract:

    Abstract Amphiphilic Janus Au NPs were synthesized by emulsion reaction with presence of d -penicillamine (D-PA) and Benzyl Mercaptan (BM) molecules at water and toluene phases, respectively. TEM and XRD characterizations indicate that the reaction product is composed of Au nanocrystals in size of 2.9 nm. XPS, FTIR, Raman and 1H NMR analyses suggest that the capping ligands on the Au NPs are D-PA and BM, where the ratio of D-PA to BM is ca. 1.7. Contact angle measurement and NOESY analysis further reveal that the hydrophilic D-PA and lipophilic BM are separated into two distinct hemispheres on the individual Au NPs. The simple and efficient approach allows large scale preparation of amphiphilic Janus Au NPs at low cost for versatile applications, such as drug delivery, vapor sensors and heterogeneous catalysts.

  • One-pot synthesis of amphiphilic Janus gold nanoparticles with d-penicillamine and Benzyl Mercaptan ligands by toluene/water emulsion reaction
    Applied Surface Science, 2019
    Co-Authors: Degui Li, Chengliang Hu, Qianjin Li

    Abstract:

    Abstract Amphiphilic Janus Au NPs were synthesized by emulsion reaction with presence of d -penicillamine (D-PA) and Benzyl Mercaptan (BM) molecules at water and toluene phases, respectively. TEM and XRD characterizations indicate that the reaction product is composed of Au nanocrystals in size of 2.9 nm. XPS, FTIR, Raman and 1H NMR analyses suggest that the capping ligands on the Au NPs are D-PA and BM, where the ratio of D-PA to BM is ca. 1.7. Contact angle measurement and NOESY analysis further reveal that the hydrophilic D-PA and lipophilic BM are separated into two distinct hemispheres on the individual Au NPs. The simple and efficient approach allows large scale preparation of amphiphilic Janus Au NPs at low cost for versatile applications, such as drug delivery, vapor sensors and heterogeneous catalysts.