ES8401469A1 - Procedimiento para la obtencion de esteres de acido piridincarboxilico. - Google Patents

Procedimiento para la obtencion de esteres de acido piridincarboxilico.

Info

Publication number
ES8401469A1
ES8401469A1 ES520528A ES520528A ES8401469A1 ES 8401469 A1 ES8401469 A1 ES 8401469A1 ES 520528 A ES520528 A ES 520528A ES 520528 A ES520528 A ES 520528A ES 8401469 A1 ES8401469 A1 ES 8401469A1
Authority
ES
Spain
Prior art keywords
connecting element
holder
components
detachable connection
plugged together
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
ES520528A
Other languages
English (en)
Other versions
ES520528A0 (es
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.)
Bayer AG
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 ES8401469A1 publication Critical patent/ES8401469A1/es
Publication of ES520528A0 publication Critical patent/ES520528A0/es
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/06—Releasable fastening devices with snap-action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/12—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with locking-pins or split-pins thrust into holes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Physics & Mathematics (AREA)
  • Earth Drilling (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

PROCEDIMIENTO PARA LA OBTENCION DE ESTERES DE ACIDO PIRIDINCARBOXILICO.CONSISTE EN LAS REACCIONES DE: A) DERIVADOS DE 1,4-DIHIDROPIRIDINA DE FORMULA (II) CON AGENTES OXIDANTES EN PRESENCIA DE DISOLVENTES INERTES A TEMPERATURAS ENTRE 0 Y 200JC; B) ACIDOS DE FORMULA (III) SE ESTERIFICAN A ESTERES DEL ACIDO CARBOXILICO DE FORMULA (I); O C) SI R1 Y/O R2 EN (I) SON UN GRUPO HIDROXIALQUILO, LAS CORRESPONDIENTES MONO- O BIS-ACETOXIALQUIL-PIRIDINA SE SOMETEN A LAS CONDICIONES DE UNA HIDROLISIS BENIGNA Y SELECTIVA; O D) SI X EN (I) ES CARBOXILO Y R1 ES HIDROXIALQUILO,COMPUESTOS (IV) SE SAPONIFICAN EN PRESENCIA DE ALCALIS COMPUESTOS (V); O E) SI R1 FORMA CON X EN (I) UN ANILLO LACTONA, ACIDOS (V), BAJO LA INFLUENCIA DE PROTONES SE CICLIZAN A COMPUESTOS (VI). EL RADICAL R ES UN RESTO ARILO O TIENILO, FURILO, PIRRILO Y OTROS; R1 ES HIDROGENO, UN RESTO ALQUILO O ARILO, UN GRUPO ACILOXIALQUILO Y OTROS; R2 ES HIDROGENO, UN RESTO ALQUILO, ARILO O UN GRUPO ACILOXIALQUILO; X ES UN GRUPO NITRILO Y OTROS; R5 ES UN RESTO HIDROCARBURO SATURADO.O INSATURADO; Y N UN NUMERO DE 1 A 4.DE USO FARMACOLOGICO EN ENFERMEDADES BASADAS EN UNA ISQUEMIAY/O HIPOXIA.
ES520528A 1982-03-13 1983-03-11 Procedimiento para la obtencion de esteres de acido piridincarboxilico. Granted ES520528A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823209284 DE3209284A1 (de) 1982-03-13 1982-03-13 Vorrichtung zur loesbaren verbindung zweier zusammengesteckter bauteile

Publications (2)

Publication Number Publication Date
ES8401469A1 true ES8401469A1 (es) 1983-12-16
ES520528A0 ES520528A0 (es) 1983-12-16

Family

ID=6158240

Family Applications (1)

Application Number Title Priority Date Filing Date
ES520528A Granted ES520528A0 (es) 1982-03-13 1983-03-11 Procedimiento para la obtencion de esteres de acido piridincarboxilico.

Country Status (2)

Country Link
DE (1) DE3209284A1 (es)
ES (1) ES520528A0 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2727168B1 (fr) * 1994-11-17 1997-01-10 Burdet Jean L Sa Dispositif d'immobilisation d'un axe dans un alesage
US6086018A (en) * 1997-12-09 2000-07-11 Mcdonnell Douglas Corporation Interlocking assembly system for an aircraft cabin
US5941126A (en) * 1998-03-12 1999-08-24 Eaton Corporation Shift fork assembly
BE1020771A3 (nl) * 2012-06-29 2014-04-01 Versus Invest Loopwagen voor een schuifdak van een trailer of vrachtwagen.
CN102852937B (zh) * 2012-09-11 2014-06-18 中国核电工程有限公司 一种可供机械手操作的快速连接装置
WO2015017971A1 (zh) * 2013-08-06 2015-02-12 吉瑞高新科技股份有限公司 电子烟
CN103742500B (zh) * 2013-12-26 2016-08-17 北京市三一重机有限公司 销轴组件和桩工机械
US10943802B2 (en) * 2018-07-31 2021-03-09 Taiwan Semiconductor Manufacturing Co., Ltd. Photoresist bottle container

Also Published As

Publication number Publication date
DE3209284A1 (de) 1983-09-15
ES520528A0 (es) 1983-12-16

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19960603