D-calcium pantothenate synthesis method
The invention discloses a synthesis method for D-calcium pantothenate, which comprises: synthesizing keto lactone pantothenate with diethyl oxalate, isobutanal and formaldehyde, reducing said product, using carbamidine carbonate to resolution out D-pantothenic carbonate and L- pantothenic carbonate;...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The invention discloses a synthesis method for D-calcium pantothenate, which comprises: synthesizing keto lactone pantothenate with diethyl oxalate, isobutanal and formaldehyde, reducing said product, using carbamidine carbonate to resolution out D-pantothenic carbonate and L- pantothenic carbonate; preparing the product with D-pantoic lactone, beta-alanine both from D-pantothenic carbonate and calcium metal. This invention avoids the application of hypertoxic sodium cyanide, stabilizes product quality, and increases material utilization ratio. |
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