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Benzyl Ester

The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform

Nagatoshi Nishiwaki – 1st expert on this subject based on the ideXlab platform

  • Substrate switchable Suzuki–Miyaura coupling for Benzyl Ester vs. Benzyl halide
    RSC Advances, 2018
    Co-Authors: Masato Ohsumi, Nagatoshi Nishiwaki

    Abstract:

    Two reaction conditions were developed to accomplish the substrate switchable Suzuki–Miyaura coupling of Benzyl derivatives and arylboronic acid derivatives. Under conditions for Esters, Benzyl Esters such as carbonates and acetates reacted with arylboronic acids to afford the corresponding diarylmethanes. However, the Benzyl halides did not react under the same conditions. On the other hand, Benzyl halides such as bromides and chlorides furnished diarylmethanes under conditions for halides, under which Benzyl Ester substrates did not react, in which water was found to play an important role. This switching system was tested using the intermolecular/intramolecular competitive reactions, during which the desired products could be synthesized by selecting the appropriate reaction conditions.

  • substrate switchable suzuki miyaura coupling for Benzyl Ester vs Benzyl halide
    RSC Advances, 2018
    Co-Authors: Masato Ohsumi, Nagatoshi Nishiwaki

    Abstract:

    Two reaction conditions were developed to accomplish the substrate switchable Suzuki–Miyaura coupling of Benzyl derivatives and arylboronic acid derivatives. Under conditions for Esters, Benzyl Esters such as carbonates and acetates reacted with arylboronic acids to afford the corresponding diarylmethanes. However, the Benzyl halides did not react under the same conditions. On the other hand, Benzyl halides such as bromides and chlorides furnished diarylmethanes under conditions for halides, under which Benzyl Ester substrates did not react, in which water was found to play an important role. This switching system was tested using the intermolecular/intramolecular competitive reactions, during which the desired products could be synthesized by selecting the appropriate reaction conditions.

Andreas Seidelmorgenstern – 2nd expert on this subject based on the ideXlab platform

  • occurrence and consequences of differences in the cation anion ratios during classical resolution d l serine Benzyl Ester 2 3 toluyl d tartrate
    Crystal Research and Technology, 2014
    Co-Authors: V. S. Sistla, Von Langermann, Heike Lorenz, Andreas Seidelmorgenstern

    Abstract:

    Differences in physical-chemical properties of diaste-reomeric salts allow the separation into the respective salts and subsequently into enantiomers by crystallization. Within this study unusual deviations in the cation-/anion-ratio of a diastereomeric salt pair were observed and characterized. While the n-salt (L-serine Benzyl Ester 2,3-toluyl-D-tartrate) crystallizes in a ratio of two cations and one anion, the p-salt (D-serine Benzyl Ester 2,3-toluyl-D-tartrate) consists of only one cation and one anion. Consequently the classical definition of a diastereomeric salt pair does not apply. In this contribution all differences in relevant thermodynamic properties of the unusual resulting diastereomeric salt pair are presented and discussed.

  • crystallization based resolution process for the 2 3 dibenzoyl d l tartrate salts of d l serine Benzyl Ester
    Crystal Growth & Design, 2013
    Co-Authors: V. S. Sistla, Heike Lorenz, Andreas Seidelmorgenstern

    Abstract:

    It is shown that the 2,3-dibenzoyl-d-/l-tartrate salts of d-/l-serine Benzyl Ester (salt pair 1, l-d,d-d; salt pair 2, d-l,l-l) behave like simple eutectic systems in their binary (melting) and ternary (solubility) systems. Due to this essential thermodynamic property, these salts are separable via crystallization. Metastable zone width data for primary nucleation of both salts were measured to support a rational process design. Resolution processes for both salt pairs were designed and executed successfully delivering diastereomeric salts in high purity. The presence of excesses of resolving agents, previously not considered, was systematically studied and found to possess the potential to further improve the performance of the selective crystallization processes.

Masato Ohsumi – 3rd expert on this subject based on the ideXlab platform

  • Substrate switchable Suzuki–Miyaura coupling for Benzyl Ester vs. Benzyl halide
    RSC Advances, 2018
    Co-Authors: Masato Ohsumi, Nagatoshi Nishiwaki

    Abstract:

    Two reaction conditions were developed to accomplish the substrate switchable Suzuki–Miyaura coupling of Benzyl derivatives and arylboronic acid derivatives. Under conditions for Esters, Benzyl Esters such as carbonates and acetates reacted with arylboronic acids to afford the corresponding diarylmethanes. However, the Benzyl halides did not react under the same conditions. On the other hand, Benzyl halides such as bromides and chlorides furnished diarylmethanes under conditions for halides, under which Benzyl Ester substrates did not react, in which water was found to play an important role. This switching system was tested using the intermolecular/intramolecular competitive reactions, during which the desired products could be synthesized by selecting the appropriate reaction conditions.

  • substrate switchable suzuki miyaura coupling for Benzyl Ester vs Benzyl halide
    RSC Advances, 2018
    Co-Authors: Masato Ohsumi, Nagatoshi Nishiwaki

    Abstract:

    Two reaction conditions were developed to accomplish the substrate switchable Suzuki–Miyaura coupling of Benzyl derivatives and arylboronic acid derivatives. Under conditions for Esters, Benzyl Esters such as carbonates and acetates reacted with arylboronic acids to afford the corresponding diarylmethanes. However, the Benzyl halides did not react under the same conditions. On the other hand, Benzyl halides such as bromides and chlorides furnished diarylmethanes under conditions for halides, under which Benzyl Ester substrates did not react, in which water was found to play an important role. This switching system was tested using the intermolecular/intramolecular competitive reactions, during which the desired products could be synthesized by selecting the appropriate reaction conditions.