Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB20264/58A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and CofiledCriticalEI Du Pont de Nemours and Co
Publication of GB829939ApublicationCriticalpatent/GB829939A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Preparation Of Compounds By Using Micro-Organisms
(AREA)
Abstract
Racemic glutamic acid is resolved by making a hot saturated solution of racemic glutamic acid in sufficient aqueous sodium hydroxide to convert not more than 78% of the acid to the monosodium salt, cooling below the temperature at which all the glutamic acid would just dissolve, seeding the solution with solid crystals of the desired optically active isomer, and cooling further until the active isomer crystallizes out. The original solution may also contain a proportion of the optical isomer which is to be isolated.
GB20264/58A1957-07-181958-06-24Improvements in the production of glutamic acid
ExpiredGB829939A
(en)
Procedure for the obtaining of 1- (2-nitrilo-phenoxy) -2-hydroxy-3-isopropylaminopropan and its salts. (Machine-translation by Google Translate, not legally binding)