Catalyst-Promoted Diastereodivergent Enantioselective Formal oxa-Diels-Alder Reaction of Unsaturated Ketones with Enoates Under Liquid-Assisted Grinding Conditions.
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DOI: 10.1002/cssc.202200028
Abstract: Chiral heterocycles are widely occurring in many compounds of interest, but their efficient synthesis is challenging. We present here the enantioselective and diastereoselective synthesis of densely substituted chiral pyran derivatives. Diastereodivergency of the oxa-Diels-Alder reaction… read more here.
Keywords: oxa diels; reaction; liquid assisted; diels alder ... See more keywords
Material removal mechanism and grinding force modelling of ultrasonic vibration assisted grinding for SiC ceramics
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DOI: 10.1016/j.ceramint.2016.11.066
Abstract: Abstract In this paper, a varied-depth nano-scratch test of single grain is carried out on a nano indentation system. The critical depth of the elastic-plastic transition for SiC ceramics is 7.27 nm, as calculated by Hertz… read more here.
Keywords: sic ceramics; assisted grinding; ultrasonic vibration; grinding force ... See more keywords
Liquid Assisted Grinding for the N-Demethylation of Alkaloids
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DOI: 10.1021/acssuschemeng.8b01393
Abstract: A mechanochemical approach has been demonstrated for the selective cleavage of nitrogen–carbon bonds in the N-demethylation of various alkaloids relevant in the pharmaceutical industry. This methodology employs a range of so-called “liquid additives” used in… read more here.
Keywords: liquid assisted; assisted grinding; grinding demethylation; demethylation alkaloids ... See more keywords
Controlling reactivity through liquid assisted grinding: the curious case of mechanochemical fluorination
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DOI: 10.1039/c6gc03139k
Abstract: We have identified an example of a mechanochemically milled organic reaction where liquid-assisted grinding controls the selectivity, such a phenomenon has not been reported/observed before. It was found that upon milling dibenzoylmethane with Selectfluor in… read more here.
Keywords: assisted grinding; reactivity liquid; case; controlling reactivity ... See more keywords
Mass production of 2D materials by intermediate-assisted grinding exfoliation
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DOI: 10.1093/nsr/nwz156
Abstract: Abstract The scalable and high-efficiency production of 2D materials is a prerequisite to their commercial use. Currently, only graphene and graphene oxide can be produced on a ton scale, and the inability to produce other… read more here.
Keywords: assisted grinding; grinding exfoliation; production; intermediate assisted ... See more keywords
Liquid-assisted grinding and ion pairing regulates percentage conversion and diastereoselectivity of the Wittig reaction under mechanochemical conditions
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DOI: 10.3762/bjoc.14.57
Abstract: Mechanochemistry is maturing as a discipline and continuing to grow, so it is important to continue understanding the rules governing the system. In a mechanochemical reaction, the reactants are added into a vessel along with… read more here.
Keywords: assisted grinding; percentage conversion; wittig reaction; reaction ... See more keywords
Design and Preparation of Zaltoprofen-Nicotinamide Pharmaceutical Cocrystals via Liquid Assisted Grinding Method
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DOI: 10.5530/ijper.53.4s.151
Abstract: Introduction: Pharmaceutical cocrystal is an endowed approach to augment solubility and dissolution of drugs with limited aqueous solubility. Zaltoprofen is a nonsteroidal anti-inflammatory drug with prevailing solubility problem. The present study deciphers preparation of cocrystals… read more here.
Keywords: assisted grinding; drug; zaltoprofen; solubility ... See more keywords