BR0007682A - Processo para a apreparação de metilcarbazato - Google Patents

Processo para a apreparação de metilcarbazato

Info

Publication number
BR0007682A
BR0007682A BR0007682-1A BR0007682A BR0007682A BR 0007682 A BR0007682 A BR 0007682A BR 0007682 A BR0007682 A BR 0007682A BR 0007682 A BR0007682 A BR 0007682A
Authority
BR
Brazil
Prior art keywords
methylcarbazate
solvent
separated
reduced pressure
under reduced
Prior art date
Application number
BR0007682-1A
Other languages
English (en)
Inventor
Lars Rodefeld
Horst Behr
Alexandre Klausener
Robert Soellner
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Publication of BR0007682A publication Critical patent/BR0007682A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C281/00—Derivatives of carbonic acid containing functional groups covered by groups C07C269/00 - C07C279/00 in which at least one nitrogen atom of these functional groups is further bound to another nitrogen atom not being part of a nitro or nitroso group
    • C07C281/02—Compounds containing any of the groups, e.g. carbazates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Indole Compounds (AREA)

Abstract

Patente de Invenção: "PROCESSO PARA A PREPARAçãO DE METILCARBAZATO". Metilcarbazato particularmente puro e particularmente pouco tendente à descoloração é obtido a partir de hidrazina e dimetilcarbonato, quando os dois reagentes são dosados simultaneamente a -20 até +30<198>C em um primeiro solvente previamente introduzido, depois se separa o solvente por destilação e produtos com baixo ponto de ebulição em pressão reduzida, depois se acrescenta ao metilcarbazato bruto presente ou um segundo solvente e se separa o mesmo por destilação em pressão reduzida ou se passa um gás inerte através do mesmo.
BR0007682-1A 1999-01-26 2000-01-17 Processo para a apreparação de metilcarbazato BR0007682A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19902960A DE19902960A1 (de) 1999-01-26 1999-01-26 Verfahren zur Herstellung von Methylcarbazat
PCT/EP2000/000310 WO2000044708A1 (de) 1999-01-26 2000-01-17 Verfahren zur herstellung von methylcarbazat

Publications (1)

Publication Number Publication Date
BR0007682A true BR0007682A (pt) 2001-11-06

Family

ID=7895390

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0007682-1A BR0007682A (pt) 1999-01-26 2000-01-17 Processo para a apreparação de metilcarbazato

Country Status (17)

Country Link
US (1) US6465678B1 (pt)
EP (1) EP1149070B1 (pt)
JP (1) JP4399119B2 (pt)
KR (1) KR20010101661A (pt)
CN (1) CN1337943A (pt)
AT (1) ATE243678T1 (pt)
AU (1) AU749982B2 (pt)
BR (1) BR0007682A (pt)
CA (1) CA2361423A1 (pt)
DE (2) DE19902960A1 (pt)
DK (1) DK1149070T3 (pt)
ES (1) ES2197072T3 (pt)
HU (1) HUP0105200A3 (pt)
IL (1) IL143872A0 (pt)
PL (1) PL348889A1 (pt)
WO (1) WO2000044708A1 (pt)
ZA (1) ZA200105035B (pt)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100341598C (zh) * 2004-12-22 2007-10-10 上海氯碱化工股份有限公司 一种低温蒸发、冷却生产超净高纯试剂的方法
CN100408554C (zh) * 2005-11-01 2008-08-06 北京格瑞华阳科技发展有限公司 高纯度肼基碳酸甲酯的合成新工艺
CN101260067B (zh) * 2007-03-07 2010-09-01 抚顺市化工研究设计院 一种肼单甲基化的方法
CN101628184B (zh) * 2009-03-18 2013-08-14 伍运洪 一种常压低温蒸馏、精馏工艺
WO2011005910A1 (en) * 2009-07-09 2011-01-13 The Procter & Gamble Company Method of laundering fabric using a compacted laundry detergent composition
CN102153490A (zh) * 2011-02-16 2011-08-17 东营柯林维尔化工有限公司 肼基甲酸酯类的合成
JP5790533B2 (ja) * 2012-02-14 2015-10-07 住友化学株式会社 フェニルヒドラジン−β−カルボキシレート化合物の精製方法
CN102898328B (zh) * 2012-10-26 2014-12-24 山东师范大学 偶氮二甲酸二乙酯及其中间体的合成方法
CN103130687A (zh) * 2013-03-19 2013-06-05 湖南斯派克材料科技有限公司 肼甲酸甲酯的制备方法
CN103819366B (zh) * 2014-02-19 2016-08-24 江苏辉腾生物医药科技有限公司 肼基甲酸苄酯的合成方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE285800C (pt)
SU407888A1 (ru) 1972-02-16 1973-12-10 Способ получения гя?г-бутилового эфира гидразинугольной кислоты
US4496761A (en) 1982-08-17 1985-01-29 Olin Corporation Process for making carbohydrazide
YU44721B (en) 1983-11-30 1990-12-31 Bristol Myers Co Process for obtaining 4-(2-phenoxyethyl)-1,2,4-triazolone
US4596884A (en) * 1983-11-30 1986-06-24 Bristol-Myers Company 4-(2-phenoxyethyl)-1,2,4-triazolone process intermediates

Also Published As

Publication number Publication date
ATE243678T1 (de) 2003-07-15
AU749982B2 (en) 2002-07-04
WO2000044708A1 (de) 2000-08-03
DK1149070T3 (da) 2003-09-29
EP1149070A1 (de) 2001-10-31
US6465678B1 (en) 2002-10-15
AU2541900A (en) 2000-08-18
JP2002535381A (ja) 2002-10-22
JP4399119B2 (ja) 2010-01-13
DE19902960A1 (de) 2000-07-27
CA2361423A1 (en) 2000-08-03
ZA200105035B (en) 2002-06-20
DE50002642D1 (de) 2003-07-31
IL143872A0 (en) 2002-04-21
PL348889A1 (en) 2002-06-17
EP1149070B1 (de) 2003-06-25
HUP0105200A2 (hu) 2002-04-29
HUP0105200A3 (en) 2002-12-28
ES2197072T3 (es) 2004-01-01
KR20010101661A (ko) 2001-11-14
CN1337943A (zh) 2002-02-27

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 5A, 6A, 7A E 8A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1925 DE 27/11/2007.