CA1173050A - Manufacturing process for preparing disubstituted imidocarbonates - Google Patents

Manufacturing process for preparing disubstituted imidocarbonates

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Publication number
CA1173050A
CA1173050A CA000417019A CA417019A CA1173050A CA 1173050 A CA1173050 A CA 1173050A CA 000417019 A CA000417019 A CA 000417019A CA 417019 A CA417019 A CA 417019A CA 1173050 A CA1173050 A CA 1173050A
Authority
CA
Canada
Prior art keywords
reaction
carbon atoms
water
alkyl radicals
range
Prior art date
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
CA000417019A
Other languages
French (fr)
Inventor
Graham E. Robinson
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.)
Syngenta Ltd
Original Assignee
Imperial Chemical Industries Ltd
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
Priority claimed from CA000344419A external-priority patent/CA1145348A/en
Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to CA000417019A priority Critical patent/CA1173050A/en
Application granted granted Critical
Publication of CA1173050A publication Critical patent/CA1173050A/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

ABSTRACT OF THE DISCLOSURE
A process for the manufacture of a disubstituted imido-carbonate of the formula:-

Claims (7)

THE EMBODIMENTS OF THE INVENTION IN WHICH AN EXCLUSIVE
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A process for the manufacture of a disubstituted imidocarbonate of the formula:- II

in which R1 and R2 are the same and are alkyl radicals of 1 to 6 carbon atoms or phenyl radicals, or R1 and R2 are joined to form an ethylene or propylene chain which is optionally substituted by 1 or 2 alkyl radicals each of 1 to 3 carbon atoms, by reaction of cyanogen chloride or cyanogen bromide with the appropriate alcohol or diol, characterised in that the reaction is conducted in a two phase system containing water and a water-immiscible organic solvent.
2. A process as claimed in claim 1 in which the reaction is conducted in the presence of a base.
3. A process as claimed in claim 2 in which the base used is sodium hydroxide.
4. A process as claimed in claim 3 in which the pH of the reaction mixture is in the range 11 to 15.
5. A process as claimed in claim 1 in which the water-immiscible organic solvent is toluene.
6. A process as claimed in claim 5 in which, the temperature of the reaction mixture is in the range -15 to 60°C.
7. A process as claimed in claim 5 in which, the temperature of the reaction mixture is in the range 5 to 25°C.
CA000417019A 1979-01-26 1982-12-03 Manufacturing process for preparing disubstituted imidocarbonates Expired CA1173050A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000417019A CA1173050A (en) 1979-01-26 1982-12-03 Manufacturing process for preparing disubstituted imidocarbonates

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB7902932 1979-01-26
GB7902932 1979-01-26
CA000344419A CA1145348A (en) 1979-01-26 1980-01-25 Manufacturing process for preparing disubstituted (n-cyano-imido) carbonates
CA000417019A CA1173050A (en) 1979-01-26 1982-12-03 Manufacturing process for preparing disubstituted imidocarbonates

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
CA000344419A Division CA1145348A (en) 1979-01-26 1980-01-25 Manufacturing process for preparing disubstituted (n-cyano-imido) carbonates

Publications (1)

Publication Number Publication Date
CA1173050A true CA1173050A (en) 1984-08-21

Family

ID=27166568

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000417019A Expired CA1173050A (en) 1979-01-26 1982-12-03 Manufacturing process for preparing disubstituted imidocarbonates

Country Status (1)

Country Link
CA (1) CA1173050A (en)

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