JPS5545610A - Selective preparation of pyrazines - Google Patents

Selective preparation of pyrazines

Info

Publication number
JPS5545610A
JPS5545610A JP11799878A JP11799878A JPS5545610A JP S5545610 A JPS5545610 A JP S5545610A JP 11799878 A JP11799878 A JP 11799878A JP 11799878 A JP11799878 A JP 11799878A JP S5545610 A JPS5545610 A JP S5545610A
Authority
JP
Japan
Prior art keywords
pyrazines
alkyldiamines
hydroxyalkyl
formula
selective preparation
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.)
Pending
Application number
JP11799878A
Other languages
Japanese (ja)
Inventor
Akira Fujita
Tsuneo Kawanobe
Kunio Kojo
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.)
T Hasegawa Co Ltd
Original Assignee
T Hasegawa Co 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
Application filed by T Hasegawa Co Ltd filed Critical T Hasegawa Co Ltd
Priority to JP11799878A priority Critical patent/JPS5545610A/en
Publication of JPS5545610A publication Critical patent/JPS5545610A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain pyrazines useful as synthetic intermediates for perfumes, agricultural chemicals, medicines, etc. industrially advantageously, by cyclization of N-(β-hydroxyalkyl)alkyldiamines.
CONSTITUTION: N-(β-hydroxyalkyl)alkyldiamines of formula I (R1WR4 are H or 1W10C alkyl) [e.g. N-(β-hydroxyethyl)ethylenediamines] is cyclized, for example, by contact reaction at 200W300°C in the presence of a dehydration and dehydrogenation catalyst, preferably, copper, zinc, etc., to give pyrazines of formula II.
EFFECT: High selectivity, purity, and yield.
COPYRIGHT: (C)1980,JPO&Japio
JP11799878A 1978-09-27 1978-09-27 Selective preparation of pyrazines Pending JPS5545610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11799878A JPS5545610A (en) 1978-09-27 1978-09-27 Selective preparation of pyrazines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11799878A JPS5545610A (en) 1978-09-27 1978-09-27 Selective preparation of pyrazines

Publications (1)

Publication Number Publication Date
JPS5545610A true JPS5545610A (en) 1980-03-31

Family

ID=14725502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11799878A Pending JPS5545610A (en) 1978-09-27 1978-09-27 Selective preparation of pyrazines

Country Status (1)

Country Link
JP (1) JPS5545610A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55122769A (en) * 1979-03-15 1980-09-20 Mitsuwaka Junyaku Kenkyusho:Kk Production of pyrazine or lower alkyl-substituted pyrazine
US4966970A (en) * 1987-12-31 1990-10-30 Korea Research Institute Of Chemical Technology Process for manufacturing pyrazines
US6901230B2 (en) 1992-12-30 2005-05-31 Ricoh Company, Ltd. Toner container having lid including lug

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4925947A (en) * 1972-06-30 1974-03-07
JPS49101391A (en) * 1973-02-08 1974-09-25
JPS49117480A (en) * 1973-03-27 1974-11-09

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4925947A (en) * 1972-06-30 1974-03-07
JPS49101391A (en) * 1973-02-08 1974-09-25
JPS49117480A (en) * 1973-03-27 1974-11-09

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55122769A (en) * 1979-03-15 1980-09-20 Mitsuwaka Junyaku Kenkyusho:Kk Production of pyrazine or lower alkyl-substituted pyrazine
US4966970A (en) * 1987-12-31 1990-10-30 Korea Research Institute Of Chemical Technology Process for manufacturing pyrazines
US6901230B2 (en) 1992-12-30 2005-05-31 Ricoh Company, Ltd. Toner container having lid including lug

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