US822672A - Process of making dialkylmalonyl ureas. - Google Patents

Process of making dialkylmalonyl ureas. Download PDF

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Publication number
US822672A
US822672A US29291505A US1905292915A US822672A US 822672 A US822672 A US 822672A US 29291505 A US29291505 A US 29291505A US 1905292915 A US1905292915 A US 1905292915A US 822672 A US822672 A US 822672A
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Prior art keywords
ureas
dialkylmalonyl
making
germany
urea
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Expired - Lifetime
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US29291505A
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Gustav Keil
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Hoechst AG
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Hoechst AG
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D211/00—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings
    • C07D211/04—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D211/06—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members
    • C07D211/36—Heterocyclic compounds containing hydrogenated pyridine rings, not condensed with other rings with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D211/40—Oxygen atoms
    • C07D211/44—Oxygen atoms attached in position 4
    • C07D211/46—Oxygen atoms attached in position 4 having a hydrogen atom as the second substituent in position 4

Definitions

  • PRQGESS 0F MAKENQE DiALK'ELiifll-ALQNYL UREA$i Specification of Letters Patent.
  • dislkylmelonylthio uress may he transformed into dialkylmelonyl me as by heating the former for a considerable time "with a solution of salts of heavy metals, such as load and copper sslts.
  • the process may be carried out, for in stance, es follows-2 One part, by Weight, of diethylmslonylthio urea is boiled forforty eight hours with a solution of four parts, byweight, of iced acetate m forty parts, by Weight, of
  • Lead solid is soon formed, yet boil.- is necessary for a considerable time to complete the transformation
  • the excess of lead may be removed from the solution by means of hydrogen sulfid or sulfuric acid and the diethylmelonyl urea of known properties is then obtained by crystallization.
  • otherdialkylmslonyl urees are transformed also while using other salts of heavy metals.

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

Description

water.
srn'rns PATENT @h hliwhh GUSTAV KElL, OF HQCHST-ON-THE-MAIN, GERMANY, ASSIGhiQR T0 FARBWERKE, VORM. MEISTER, LUCEUS t'BRUNlNG, OF HUGHST- ONTHE-MAIN, GERMANY, 'A CORPORATION 0F GERMANY.
PRQGESS 0F MAKENQE: DiALK'ELiifll-ALQNYL UREA$i Specification of Letters Patent.
Patented June 5, 19 06.
Application filed December 22, 1905. Serial No. 292,916.
1'0 all whom it may concern:
Be it known that I, GUSTAV KEIL, P1111), chemist, a citizen of the Empire of Germany, residing at Hochsbon-the-Mein, Germany, hsveinvented certain useful Improvements in the itia'nuiscture of Dialkylmalonyl Urea-s, of which the following is a specification.
i have found that dislkylmelonylthio uress may he transformed into dialkylmelonyl me as by heating the former for a considerable time "with a solution of salts of heavy metals, such as load and copper sslts.
The process may be carried out, for in stance, es follows-2 One part, by Weight, of diethylmslonylthio urea is boiled forforty eight hours with a solution of four parts, byweight, of iced acetate m forty parts, by Weight, of
Lead solid is soon formed, yet boil.- is necessary for a considerable time to complete the transformation The excess of lead may be removed from the solution by means of hydrogen sulfid or sulfuric acid and the diethylmelonyl urea of known properties is then obtained by crystallization. In an analogous manner otherdialkylmslonyl urees are transformed also while using other salts of heavy metals.
Having now described my invention, what I claim is The process herein described for the menufecture of dislkylmalonyl ureas, which consists in heating dialkylmalonylthio ureas With solutions of salts of heavy metals.
In testimony that I claim the foregoing as my invention I have signed my name in presence of two subscribing Witnesses.
' GUSTAV KEliJ. Witnesses JEAN GRUND, CARL GRUND.
US29291505A 1905-12-22 1905-12-22 Process of making dialkylmalonyl ureas. Expired - Lifetime US822672A (en)

Priority Applications (1)

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US29291505A US822672A (en) 1905-12-22 1905-12-22 Process of making dialkylmalonyl ureas.

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US29291505A US822672A (en) 1905-12-22 1905-12-22 Process of making dialkylmalonyl ureas.

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