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Volumn 9, Issue 4, 1998, Pages 691-696

Polymer enlarged oxazaborolidines in a membrane reactor: Enhancing effectivity by retention of the homogeneous catalyst

Author keywords

[No Author keywords available]

Indexed keywords

OXAZABOROLIDINE; UNCLASSIFIED DRUG;

EID: 0032570496     PISSN: 09574166     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0957-4166(98)00011-1     Document Type: Article
Times cited : (98)

References (37)
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    • To obtain a homogeneous solution of the polymer it is necessary to add 0.5% of MeOH to the toluene solution (boroxine opening). The alcohol was than removed by azeotropic distillation, i.e. reduction to half the original volume followed by addition of fresh absolute toluene (3×).
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    • The detailed results of our kinetic investigations comprising a kinetic model which allows predictions of conversions and ees will be published elsewhere.
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    • Slow addition of the ketone to the reaction mixture in batch experiments (for example via a syringe pump) also suppresses the uncatalysed reaction down to an almost negligible amount.
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