3- Phenyl-1-propene

It should be emphasized, however, that classical syntheses of cinnolines by conventional methods are reported to give higher yields. For example, Jacobs and Winstein (1946) obtained 4-methylcinnoline in 90% yield by diazotization of 2-(2 -amino-phenyl)propene in 10% aqueous H2S04, storing the solution diluted ten-fold for three days, rendering alkaline with NaOH, and extracting with benzene. 

Methyl-1-phenyl-propen — (2-Methyl-propyl)-benzol 97% d.Th. 

Schwer reduzierbare kon jugierte Nitro-olefine, z. B. phenolische 2-Nitro-1-phenyl-propen-Derivate, werden zweckmaBig mit Natrium-bis-[2-methoxy-athoxy]-di-hydrido-aluminat zu den 2-Amino-1 -phenyl-propanen umgesetzt12 ... 

Phenyl-3-(2-hydroxy-phenyl)-propen 88% d.Th. 4-Chlor-2-benzyl-phenot 97% d.Th. 

Chlor-2-phenyl-propen —> Phenyl-cyclopropan 55% d. Th. Kp4S 86°... 

Allylalkohole4 5 (z. B. Zimtalkohole5 7) werden durch gemischte Hydride unter teilwei-ser Isomerisierungreduziert (z.B. R1 = R2 1 -Phenyl-propen, 44% d.Th. 3-Phenyl-pro-pen, 20% d.Th.) ... 

Analog erhalt man aus 1-Phenyl-propen J-Phenyl-propan6 bzw. aus 4-Methyl-cyclo-hexen 4-Methyl-cyclohexan6. 

R = 4-HjCOOC-C6H4 4-Amino-benzoesaure-methylester 90% d.Th. (5 Min.) R = H5C6-CH=CH-CH2- 3-Amino-l-phenyl-propen 90% d.Th. (12 Stdn.)... 

Dagegen wird 3-Methoxy-3-phenyI-propin in Dimethylformamid/Tetrabutylammo-niumjodid an Quecksilber (-2,3 V) quantitativ zu 3-Methoxy-3-phenyl-propen reduziert1. 

R2 = C6H5 3-Amino-l-phenyl-propen R2 = CN /,4-Diamino-buten-(2)... 

Styrol und 2-Phenyl-propen werden in wasserhaltigen Nitrilen (get. Zelle, -10° LiC104 Pt-Netz-Kathodc) zu Ketonen elektrolysiert z.B.6 ... 

Styrol, Stilben, Phenyl-propen und Fumarsaure-diathylester liefern mit Alkylhalogeniden in HMPTA/Li-thiumchlorid Addukte mit 2 vicinalen Alkyl-Gruppen1. 

Abstract Magnesium porphyrazines substituted with eight (phenyl-propene) groups on the peripheral positions have been prepared by cyclotetramerization of l,2-bis(3-phenyl-2-propenethio) maleonitrile and then achieved porphyrazine by 3-bromo-l-phenyl-l-propene. Metal-free derivative was obtained by its treatment with trifluoroacetic acid. The new compounds have been characterized by FT-IR, H-NMR, UV-VIS and elemental analysis methods. 

In a subsequent paper, the authors developed another type of silica-supported dendritic chiral catalyst that was anticipated to suppress the background racemic reaction caused by the surface silanol groups, and to diminish the multiple interactions between chiral groups at the periphery of the dendrimer 91). The silica-supported chiral dendrimers were synthesized in four steps (1) grafting of an epoxide linker on a silica support, (2) immobilization of the nth generation PAMAM dendrimer, (3) introduction of a long alkyl spacer, and (4) introduction of chiral auxiliaries at the periphery of the dendrimer with (IR, 2R)-( + )-l-phenyl-propene oxide. Two families of dendritic chiral catalysts with different spacer lengths were prepared (nG-104 and nG-105). 

Mercapto-benzimidazol (und ahnliche ambidente Nukleophile) werden mit Kohlensaure-al-lylestern thermodynamisch kontrolliert am S-Atom angegriffen, wenn man das thiophile Palladium ) als Katalysator einsetzt. Mit 3-Ethoxycarbonyloxy-l-phenyl-propen II erhalt man 2-(3-Phenyl-allylthio)-benzimidazol (III 36%), mit 2 Aquivalenten an II l-(3-Phenyl-allyl)-2-(3-phenyl-allyIthio)-benzimidazol (IV 52%) neben einer geringen Menge l,3-Bis-[3-phenyl-allyl)-2-thiono-2,3-dihydro-benzimidazol (V 7%)378. 

Na[BHJ/SnCI2 2H20/C2H50H 60° 2 h 3- (4- Amino-phenyl)-propen-sdure-ethylester 71 7... 

Li[CoPc] - 4 THFm/C2HsOH 25° 65 h 2 H,O/C02 3- 4- Amino-phenyl) -propen-sdure-ethylester 82 8... 

Analog erhiilt man aus (E)- oder (Z)-l-Phenyl-propen nach Methode (1 h) 2-Amino-1-bram-l-phenyl-propcm-Hydrochlorid ( 40%) als 80 20 erythro/threo-Gzmisch. 

Phenylacetylene 13 readily reacts with Me2PhSiH under CO pressure to give 3-dimethylphenylsilyl-2-phenyl-propenal 14a in the presence of a catalytic amount of Rh4(CO)i2 (Equation (2)). When 10-20 atm of CO pressure and 0.1-0.2 mol% of Rh4(GO)i2 are applied, the reaction is completed within 2 h at 100 °G. Silylformylation proceeds smoothly even at room temperature, though the reaction becomes slower (600-700 turnover frequency at room temperature after 17 h). The reaction does proceed in the absence of Et3N, but its presence improves yield and (Z)-selectivity of product 14a. ... 

Diethyl oxalate is also reported to form an oxetane with 1,1-diphenyl-ethene and 2-phenyl propene.102... 

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