CAS: 2049-73-2; 1,3-Diethoxybenzene

上下游产品

CAS号82935-36-2 2,6-二乙氧基苯甲酸 | CAS号5323-87-5 3-乙氧基-2-环己烯-1-酮 | CAS号1801-77-0 二氯乙氧基合氧钒 | CAS号75-03-6 碘乙烷 | CAS号108-46-3 间苯二酚 | CAS号74-96-4 溴乙烷 | CAS号504-02-9 1,3-环己二酮 | CAS号6025-45-2 disodium benzen... | CAS号595-31-3 (1S)-1,8,8-trim... | CAS号124480-95-1 3,5-二乙氧基苯甲酸 | CAS号89-84-9 2',4'-二羟基苯乙酮 | CAS号15889-67-5 bis(4-ethoxy-2-... | CAS号22924-18-1 2,4-二乙氧基苯乙酮 | CAS号2161-85-5 4,6-二乙酰基雷锁酚 | CAS号22924-16-9 2,4-二乙氧基苯甲醛 | CAS号203912-41-8 Benzeneacetalde... | CAS号90109-45-8 3,5-Diethoxy-4-... | CAS号90109-53-8 2-(3,5-diethoxy... | CAS号4270-96-6 benzene-1,2,3,4... | CAS号64635-54-7 3-ethoxy-4-nitr...

3,5-二乙氧基苯甲酸置于甲基锂,Calcium Carbonate体系中,化学反应生成二乙氧基苯
参考文献:Barth,Chemische Berichte,1878,Vol. 11,P. 1571
标题:Barth,Chemische Berichte,1878,Vol. 11,P. 1571

专利信息

专利号:US-6417380-B1
优先权日:1987-12-31
标 题 :Synthesis of 1,2-dioxetanes and intermediates therefor
发明人：BRONSTEIN IRENA Y; EDWARDS BROOKS
摘要:Compounds having the formula: n wherein T is a polycycloalkylidene group (e.g., adamant-2-ylidene); R is a C 1-20 alkyl, aralkyl or cycloalkyl group; and Y is a fluorescent chromophore (e.g., n m-phenylene), produced by reacting a compound having the formula: n with an R-ylating agent (e.g., R 2 SO 4 ) in the presence of an alkali metal alkoxide in a polar aprotic solvent. Also, compounds having the formula: n are produced by reacting a compound having the formula: n with n wherein X is an electronegative leaving group (e.g., a halogen anion such as chloride ion) in the presence of a Lewis base (e.g., a trialkyl-amine) dissolved in an aprotic organic solvent (e.g., benzene or toluene). Also, compounds having the formula n are produced by reacting a compound of the formula n with a tetra-O-acylated-O-hexopyranoside halide, then hydrolyzing off the protective acyl groups. The aforementioned compounds and procedures are useful in the synthesis of enzyme-cleavable 1,2-dioxetane ring systems that can serve as members of a binding pair employed, for example, in chemiluminescent immunoassays, DNA probe assays, and direct assays for an enzyme.

专利号:US-5777133-A
优先权日:1987-12-31
标 题:Synthesis of 1, 2-dioxetanes and intermediates therefor
发明人：BRONSTEIN IRENA Y; EDWARDS BROOKS
权利人:TROPIX INC
摘要:Compounds having the formula: ##STR1## wherein T is a polycycloalkylidene group (e.g., adamant-2-ylidene); R is a C 1-20 alkyl, aralkyl or cycloalkyl group; and Y is a fluorescent chromophore (eg., m-phenylene), produced by reacting a compound having the formula: ##STR2## with an R-ylating agent (e.g., R 2 SO 4 ) in the presence of an alkali metal alkoxide in a polar aprotic solvent. Also, compounds having the formula: ##STR3## are produced by reacting a compound having the formula: ##STR4## wherein X is an electronegative leaving group (e.g., a halogen anion such as chloride ion) in the presence of a Lewis base (e.g., a trialkyl-amine) dissolved in an aprotic organic solvent (e.g., benzene or toluene). Also, compounds having the formula ##STR5## are produced by reacting a compound of the formula ##STR6## with a tetra-O-acylated-O-hexopyranoside halide, then hydrolyzing off the protective acyl groups. The aforementioned compounds and procedures are useful in the synthesis of enzyme-cleavable 1,2-dioxetane ring systems that can serve as members of a binding pair employed, for example, in chemiluminescent immunoassays, DNA probe assays, and direct assays for an enzyme.

专利号:US-4956477-A
优先权日:1987-12-31
标 题:Synthesis of 1,2-dioxetanes
发明人：BRONSTEIN IRENA Y; EDWARDS BROOKS
权利人:TROPIX INC
摘要:Compounds having the formula: ##STR1## wherein T is a polycycloalkylidene group (e.g., adamant-2-ylidene); R is a C 1-20 alkyl, aralkyl or cycloalkyl group; and Y is a fluorescent chromophore (e.g., m-phenylene), produced by reacting a compound having the formula: ##STR2## with an R-ylating agent (e.g., R 2 SO 4 ) in the presence of an alkali metal alkoxide in a polar aprotic solvent. Also, compounds having the formula: ##STR3## are produced by reacting a compound having the formula: ##STR4## wherein X is an electronegative leaving group (e.g., a halogen anion such as chloride ion) in the presence of a Lewis base (e.g., a trialkyl-amine) dissolved in an aprotic organic solvent (e.g., benzene or toluene). Also, compounds having the formula ##STR5## are produced by reacting a compound of the formula ##STR6## with a tetra-O-acylated-O-hexopyranoside halide, then hydrolyzing off the protective acyl groups. The aforementioned compounds and procedures are useful in the synthesis of enzyme-cleavable 1,2-dioxetane ring systems that can serve as members of a binding pair employed, for example, in chemiluminescent immunoassays, DNA probe assays, and direct assays for an enzyme.

专利号:US-6124478-A
优先权日:1987-12-31
标题 :Methods of using 1,2-dioxetanes and kits therefore
发明人：BRONSTEIN IRENA Y; EDWARDS BROOKS
权利人:TROPIX INC
摘要:Compounds having the formula: ##STR1## wherein T is a polycycloalkylidene group (e.g., adamant-2-ylidene); R is a C 1-20 alkyl, aralkyl or cycloalkyl group; and Y is a fluorescent chromophore (e.g., m-phenylene), produced by reacting a compound having the formula: ##STR2## with an R-ylating agent (e.g., R 2 SO 4 ) in the presence of an alkali metal alkoxide in a polar aprotic solvent. Also, compounds having the formula: ##STR3## are produced by reacting a compound having the formula: ##STR4## with ##STR5## wherein X is an electronegative leaving group (e.g., a halogen anion such as chloride ion) in the presence of a Lewis base (e.g., a trialkyl-amine) dissolved in an aprotic organic solvent (e.g., benzene or toluene). Also, compounds having the formula ##STR6## are produced by reacting a compound of the formula ##STR7## with a tetra-O-acylated-O-hexopyranoside halide, then hydrolyzing off the protective acyl groups. The aforementioned compounds and procedures are useful in the synthesis of enzyme-cleavable 1,2-dioxetane ring systems that can serve as members of a binding pair employed, for example, in chemiluminescent immunoassays, DNA probe assays, and direct assays for an enzyme.

专利号:US-5852180-A
优先权日:1997-11-17
标题:Chemical synthesis of 6-O-alkyl erythromycin A
发明人：PATEL HEMANTKUMAR H
权利人:ABBOTT LAB
摘要:A process of preparing 6-O-alkyl erythromycin A is provided. The process includes the steps of protecting the oxime hydroxyl of 9-oxime erythromycin A with a benzoyl protecting group, protecting the 2'-hydroxyl group and optionally the 4'-hydroxyl group with an O-protecting group, alkylating the 6-hydroxyl, removing the benzoyl and O-protecting groups and deoximating the 9-oxime.

专利号:US-4246176-A
优先权日:1979-07-05
标 题 :Synthesis of 5-aroyl-1-hydrocarbylpyrrole-2-acetic acid
发明人：ZAIKO EDWARD J
权利人:ETHYL CORP
摘要:The reaction between a 5-cyano-1-hydrocarbylpyrrole-2-acetic acid and an aryl Grignard compound to produce a ketimine salt-containing reaction intermediate is improved by performing such reaction in an aromatic ether reaction medium at a temperature above about 100° C. As compared to the previously known process, the reaction rate is markedly increased without loss of selectivity. Also, the water insolubility of aromatic ethers simplifies product work-up and recovery, reduces product losses, and facilitates solvent recovery and recycle. Preferably, the aryl Grignard reagent is prepared at the outset in tetrahydrofuran or methyl tetrahydrofuran--solvents in which such Grignard reagents are readily and safely produced. The resultant Grignard solution may then be employed in forming the aromatic ether-containing reaction medium in which the above reaction is conducted.