2,3,-Diphenyl-4-hydroxy-4-methoxy

There is one substituted methylenecyclopropene for which the radical cation is well understood the 2,3-diphenyl, 4-hydroxy, 4-methoxy derivative (16). This ion is not formed by 1-electron oxidation or chemi-ionization from the methylenecyclopropene. Instead it arises from rearrangement of its tautomer, methyl 2,3-diphenylcyclopropene-l-carboxylate (17) in pro tic media . This represents another example of reversal of stability... 

Benzo[b]furan, 3-(2-hydroxy-3,5-dichlorophenyl)-5,7-dichloro-properties, 4, 708 Benzo[b]furan, 2-lithio-synthesis, 4, 652 Benzo[i]furan, 3-lithio-ring opening, 4, 79 Benzo[b]furan, methoxy-mass spectrometry, 4, 583 Benzo[b]furan, 6-methoxy-2,3-diphenyl-synthesis, 4, 679... 

Selenophene, 2,5-dimethyl-3-mercapto-synthesis, 4, 956 tautomerism, 4, 946 Selenophene, 2,4-diphenyl-synthesis, 4, 135 Selenophene, 2,5-diphenyl-lithiation, 4, 949 UV spectra, 4, 941 Selenophene, 2-ethoxycarbonyl-mercuration, 4, 946 Selenophene, halo-reactions, 4, 955 Selenophene, 2-hydroxy-Michael reaction, 4, 953 tautomerism, 4, 36, 945, 953 Selenophene, 3-hydroxy-tautomerism, 4, 36, 945 Selenophene, 3-hydroxy-2,5-dimethyl-tautomerism, 4, 945, 953 Selenophene, 2-hydroxy-5-methyl-methylation, 4, 953 tautomerism, 4, 945 Selenophene, 2-hydroxy-5-methylthio-tautomerism, 4, 945 Selenophene, 3-iodo-synthesis, 4, 955 Selenophene, 3-lithio-reactions, 4, 79 synthesis, 4, 955 Selenophene, 2-mercapto-tautomerism, 4, 38 Selenophene, 3-mercapto-tautomerism, 4, 38 Selenophene, 2-mercapto-5-methyl-synthesis, 4, 956 tautomerism, 4, 946 Selenophene, 3-methoxy-lithiation, 4, 949, 955 synthesis, 4, 955 Selenophene, methyl-oxidation, 4, 951 synthesis, 4, 963 Selenophene, 2-methyl-lithiation, 4, 949 Selenophene, 3-methyl-synthesis, 4, 963... 

Hydroxy-2,3-diphenyl- 156 3-Hydroxy-2-methyl-l,3-diphenyl- 296 3-Hydroxy-l-phcnyI- s. Zimtalkohol 3-Isothiocyanat- 124 3-Methoxy-l -phenyl- 549 3-Methoxy-3-phenyl- 578... 

Hydroxy-3-methoxy-tctramethyl- 669 di-2-Hydroxymethyl-1 -methoxyearbonyl- 153 2-lsocyanat-2-methyl-1,1-diphenyl - 123 Isopropenyl- 67. 69... 

A few extensions of the Conrad-Limpach synthesis have been applied to the synthesis of 4,7-phenanthrolines. Unlike o-phenylenediamine, which gives a quinoxaline derivative, p-phenylenediamine reacts with excess of ethyl ethoxalylpropionate to give an intermediate bisanil, which cyclizes in hot diphenyl ether to afford 3,8-dicarboethoxy-l,10-dihydroxy-2,9-dimethyl-4,7-phenanthroline in high yield.237 With diethyl ethoxymethylenemalonate as condensing agent, 6-amino-8-methoxy-quinoline has been converted into 2-carboethoxy-l-hydroxy-6-methoxy-4,7-phenanthroline.238 A related condensation affording 1-... 

The structures of anhydro 9,9-dimethyl-4-hydroxy-2-oxo-6,7,8,9-tetrahy-dro-2H-pyrido[2,l- >] [1,3]thiazinium hydroxide (95JOC3795,95T6651) and llh-isopropyl-2-methoxy-3,4-diphenyl-2,6,7,llh-tetrahydro-[l,3]thiazino-[2,3-a]isoquinoline [79AX(B)1285] were determined by means of X-ray diffraction analysis. 

Hydroxy-3-(3-hydroxybutyl)-l-phenyl-l,8-naphthyridin-2( 1 //(-one 4-Hydroxy-3-iodo-1,8-naphthyridin-2( 1 //(-one 4-Hydroxy-6-methoxy-1 -phenyl-1,8-naphthyridin-2( 1 //(-one 4-Hydroxy-3-(3-methylbut-2-enyl)-l-phenyl-1,8-naphthyridin-2(l//)-one 4-Hydroxy-5-methy 1-2,7-diphenyl-1,8-naphthyridin-2( 1 //(-one 7-Hydroxymethyl-1,8-naphthyridin-2-amine... 

Benzyl-diethoxy- E2, 134 Benzyl-diisopropyloxy- E2, 134 Benzyl-ethyl-phenyl- -tosylimid E2, 113 Benzyl-methyl-phenyl- -tosylimid E2, 113 Benzyloxy-diphenyl- E2, 17, 18 Benzyloxy-ethoxy-hydroxy- E2, 187 Bis-[2-biphenylyl]- E2, 876 [2,6-bis-(2-tetrahydropyranyloxy-methyl)-phenyl]-Bis-[4-brom-anilino]-phenyl- E2, 416 Bis-[2-brom-ethoxy]-(2-brom-ethyl)- E2, 196 Bis-[butylthio]-ethyi- E2, 79, 408 Bis-[2-chlor-cthoxy]-butyl- E2, 196 Bis-[2-chlor-ethoxy]-(2-chlor-ethyl)- E2, 196 Bis-[2-chlor-ethoxy]-methyl- E2, 196 Bis- 2-chlor-ethoxy]-phenyl- E2, 196, 197, 202 Bis- 2-ehlor-ethoxy]-(2-phcnyl-vinyl)- E2, 196 Bis-(2-ehlor-ethoxy]-vinyl- E2, 196 Bis-j 2-chlor-ethyl]-methyl- E2, 205 Bis-[chlormethyl]-dodecyl- E2, 22 Bis-12-cyan-ethyl]- E2, 223 Bis- diethylamino]-butyl- E2, 486 Bis-[ l-cthinyl-butyl]-phenyl- E2, 197 Bis-[ethoxycarbonyl-methyl]-chlor- E2, 251 Bis-[ethylthio]-ethyl- E2, 408 Bis-[4-methoxy-aniliiio]-phenyl- E2, 416 Bis-[4-methyl-phenylJ-phenyl- K2, 105 Bis- 4-methyl-phcnyl]-phenyl- -phenylsulfonvlimid E2, 105... 

Brom-phenyl)-(4-chlor-phenyl)- E2, 290 (4-Brom-phenyl)-dimethoxy- E2, 202 (4-Brom-phenyl)-dipropyloxy- E2, 202 (4-Brom-phenyl)-methoxy-phenyl- E2, 293 2-Butenyl-dimethoxy- E2, 201 tert.-Butyl-chlor-methyl- E2. 288 Butyl-diehlor- E2, 854 Butyl-diethoxy- E21, 201, 206 Butyl-difluor- E2, 854 Butyloxy-diethylamino-phcnyl- E2, 209 Butyloxy-diphenyl- E2, 281 tert.-Butyloxy-diphenyl- E2, 23 Butyloxy-dipropyl- E2, 292 Butvloxy-ethoxy-hydroxy- E2,187 Butvloxy-hydroxy-phenyl- E2, 189, 190, 422 tcrt.-Butyloxy-phenyl-vinyl- E2, 22 Butylthio-chlor-ethyl- E2, 222 (4-Chlor-butyl)-dibutyloxy- E2, 201 Chlor-(2-chlor-1 -chlormethyl-ethoxy)-phenvl- E2, 191, 197... 

Chlor-diphenyl- E2, 11-18, 22, 77-78, 139, 161, 211, 224, 229, 237, 240, 241, 280, 281, 288, 289, 290, 297, 298. 865 (2-Chlor-ethoxy)-dichlor- E2, 151 (2-ChJor-cthoxy)-hydroxy-methyI- E2, 186 (2-Chlor-ethyl)-dichlor- E2, 192 (2-Cblor-ctbyl)-methyl-trimcthylsilyloxy- E2, 209 Chlor-ethyl-isopropylthio- E2, 222 Chlor-ethyl-phcnyl- E2, 211, 280 Chlor-ethyl-2-thienyl- E2, 9, 10 Chlor-(4-methoxy-phenyl)-phenyl- E2, 290 Cblormethyl-dichlor- E2, 157, 158, 474 (4-Ch(or-phenyl)-dichlor- El, 192 (4-Chlor-phenyl)-diethyl- E2, 99 (4-Chlor-phenyl)-diethyl- -4-nitro-phenylimid E2, 99... 

Reductive debenzylation. 2-Benzyloxy-3,6-diisobutyl-5-methoxypyrazine 4-oxide (21) gave 3,6-diisobutyl-5-methoxy-2(l//)-pyrazinone 4-oxide (22) (H2, Pd/C, EtOH, h 90% structure confirmed by X-ray analysis) 310 2,5-dibenzy-loxy-3,6-diphenylpyrazine likewise gave 5-hydroxy-3,6-diphenyl-2(l//)-pyrazinone (23) (43%).82... 

Diphenyl-methoxy- (tetrafluoro-borat) Ell, 369 (O-Alkylier.) (4-Hydroxy-phenyl)-methyl-phenyl-(pikrat) Ell, 470 (R2SO + ArH)... 

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