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
GB2634855A
Inventor
Etcyl Howell Blair
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.)
Dow Chemical Co
Original Assignee
Dow Chemical 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 Dow Chemical CofiledCriticalDow Chemical Co
Priority to GB2634855ApriorityCriticalpatent/GB772329A/en
Publication of GB772329ApublicationCriticalpatent/GB772329A/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
The invention comprises bis-(dihalocyanovinyl)terephthalates of the formula <FORM:0772329/IV(b)/1> in which X is halogen, and a process for making them by the removal of hydrogen halide from the corresponding trihalocyanoethyl-terephthalates with pyridine. In examples, bis-(2 : 2 : 2-trichloro - 1 - cyanoethyl) - terephthalate and the corresponding tribromo compound are heated with pyridine to give the bis-dihalocyanovinyl terephthalates. Specification 772,080 is referred to.
A method of preparation of compounds 9-halo-16-hydroxy-hydrocortisons and esters of these (Machine-translation by Google Translate, not legally binding)
Procedure for the manufacture of derivatives of the 1-bencil tetrahidroisoquinolina basically replaced (Machine-translation by Google Translate, not legally binding)