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(12) Patent: | (11) CA 1177491 |
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(21) Application Number: | 1177491 |
(54) English Title: | PROCESS FOR THE PREPARATION OF 2-[[[5- (DIMETHYLAMINO)METHYL-2-FURANYLMETHYLTHIO FURANYL]METHYL]THIO]ETHANEAMINE ETHANEAMINE |
(54) French Title: | METHODE DE PREPARATION DE 2-[[[5-(DIMETHYL- AMINO)METHYL-2-FURANYL] METHYL] THIO] ETHYLENEAMINE |
Status: | Term Expired - Post Grant |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : | |
(71) Applicants : | |
(74) Agent: | BORDEN LADNER GERVAIS LLP |
(74) Associate agent: | |
(45) Issued: | 1984-11-06 |
(22) Filed Date: | 1983-06-06 |
Availability of licence: | Yes |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | ||||||
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ABSTRACT
A new process for the preparation of 2-[[[5-(dimethyl-
aminol-methyl-2-furany] methy] thio]ethaneamine of the formula
<IMG>
is described, wherein 2-[[[5-(dimethylamino)methyl-2-furany] -
methyl] thio]ethanol of the formula
<IMG>
is halogenated to the corresponding halogenide of the formula
<IMG>
wherein Hal is chlorine or bromine, and the resulting compound is
aminated with ammonia to yield the desired compound.
The desired compound represents a valuable intermediate
for the preparation of the therapeutically important compound
ranitidine, which is used for the treatment of ulcer diseases.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 1177491 was not found.
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Description | Date |
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Inactive: IPC from MCD | 2006-03-11 |
Inactive: IPC from MCD | 2006-03-11 |
Inactive: Expired (old Act Patent) latest possible expiry date | 2003-06-06 |
Inactive: Reversal of expired status | 2001-11-07 |
Inactive: Expired (old Act Patent) latest possible expiry date | 2001-11-06 |
Grant by Issuance | 1984-11-06 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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None |
Past Owners on Record |
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ALENKA HRIBAR-KIKELJ |
JANKO ZMITEK |
JOLANDA LAH |