PROCESS FOR PREPARING 4-HYDROXY-2-CYCLOPENTENONES

申请公布号：DE3472246(D1)

申请号：DE19843472246

申请日期：1984.07.19

申请公布日期：1988.07.28

申请人：

SUMITOMO CHEMICAL COMPANY, LIMITED

发明人：MINAI, MASAYOSHI;KATSURA, TADASHI

分类号：C07C49/703;C07B55/00;C07C45/00;C07C45/64;C07C45/67;C07C49/707;C07C49/743;C07C67/00;(IPC1-7):C07C49/707;C07C45/65

主分类号：C07C49/703

摘要：A process for producing a compound of the formula: <IMAGE> (I) wherein R1 is a hydrogen atom, an alkyl group or an alkenyl group and R2 is an alkyl group, an alkenyl group or an alkynyl group, which comprises treating a compound of the formula: <IMAGE> (II) wherein R1 and R2 are each as defined above and R is a hydrogen atom or a lower alkyl group in the presence of an acidic substance and water.

BUOYANCY POWER GENERATION EQUIPMENT

BROADCASTING SIGNAL TRANSMITTING SYSTEM AND BROADCASTING SIGNAL TRANSMITTING ROUTER

SEMICONDUCTOR DEVICE AND FABRICATING METHOD THEREOF

INTAKE MANIFOLD HAVING THE HEAT PROTECTOR

BI FUEL SYSTEM HAVING AUTO TUNING MODE AND METHOD FOR AUTO TUNING OF THE SAME

CYCLOALKYLAMINES AS MONOAMINE REUPTAKE INHIBITORS

METHOD FOR CORRECTING POSITION ESTIMATIONS BY SELECTING PSEUDO-DISTANCE MEASUREMENTS

A METHOD FOR PREPARING SILVER NANOPARTICLES USING IONIC LIQUID

ANTI-INFLUENZA VIRAL AGENT, THE COMPOSITION AND THE FOOD CONTAINING THE SAME

RUBBER COMPOSITION AND FLOW PATH MANUFACTURED USING THE SAME

PHARMACEUTICAL COMPOSITION FOR PREVENTING OR TREATING HORMONE-REFRACTORY PROSTATE CANCER AND METHOD OF SCREENING THE SAME

FRONT LIGHTING CONTROL SYSTEM OF VEHICLE

HIGH SPEED TEMPERATURE SENSING DEVICE

THE APPARATUS AND METHOD OF TRAFFIC CONTROL BY USE A SMARTPHONE

AUTOMATIC WASHER FOR AUTOMOBILE COMPONENTS

MULTI-PROCESSOR DISTRIBUTED REAL-TIME CONTROL SOFTWARE ARCHITECTURE FOR INTELLIGENT ROBOTS

CORNER MOLD

A HANDRAIL WITH THE REGULATION OF ANGLE

METHOD AND APPARATUS FOR COOLING WIRE-ROD COIL

METHOD AND SYSTEM FOR PROVIDING SOCIAL NETWORK SERVICE USING MOBILE TERMINAL