Buten 3-methyl-4-phenyl

N-Diphenylmethylen- 374 N-Diphenylmethylen-O-aminocarbonyl- 612 N-[l,3-Diphenyl-propyl-(2) - 374 N-[l,3-Diphenyl-propyliden-(2)]- 374, 377, 380 N-(4-Halogen-phenyI)- 683 N-Heptyl- 375 N-Heptyl-N-acetyl- 376 N-Heptyliden- 375 N-Hcptyliden-O-acetyl- 376 0-(2-Hydroxy-athyl)-N-athoxycarbonyl- 133 N-(4-Hydroxy-phenyl)- 683 0-(2-Hydroxy-l-phenyl-athyI)-N-athoxycarbonyI-aus 0-(ci-AthoxycarbonyI-benzyl)-N-athoxycar-bonyl-hydroxylamin und Lithiumalanat 133 N-Isopropyl- 682 N-Isopropylidcn- 613 N-Methyl- 133, 682 O-Methyl-N-bcnzyliden- 377 O-Methyl-N-benzyliden- 375 0-Methyl-N-(4-chlor-benzyl)- 375 0-Methyl-N-(4-chlor-benzyliden)- 375 N-Methy -N,0-diacetyI- 682 N-(4-Methyl-phenyl)- 683 0-McthyI-N-( 1 -phenyl-athyliden)- 375 N-(4-Methylthio-phenyl)- 684 N-(4-Nitro-benzyl)- 374 N-[4-Nitro-benzyliden - 374, 377 N-(2-Nitro-phenyl)- 562 N-(4-Nitro-phenyl)- 682 N-Nitroso-N-cyclohexyl- 697 N-Octyl- 374 N-Octyl-(2)-N-acetyl- 376 N-Octyliden- 374 N-0ctyliden-(2)-0-acctyl- 376 N-(Pentafluor-phenyl)-0,N-diacetyl- 697 N-Phenyl- 474, 481, 682, 783 N-Phenylacetyl-O-benzoyl- 265 N-(l-Phenyl-athyl)- 374 N-(l-Phenyl-athyl)-N-acetyl- 376 N-(l-Phenyl-athyliden)-374, 613 N-( l-Phenyl-athyliden)-0-acetyl- 376 N-[ 1 -Phenyl-buten-( 1 )-yl-(3)-iden]- 582 N-f4-Phenyl-butyl-(2)-iden]- 581 N-Phcnyl-N,0-diacetyl- 682 N-(4-Phenylthio-phenyl)- 684 N-Propyl-N-cyclohexyl- 376 N-Propyl-N-isopropyl- 376 O-Sulfonyl- 481 N-(4-Sulfonyl-phenyI)- 683 N-(2-Vinyl-phenyl)- 698... 

Photolysis of methyl-phenyl-diazomethane in cis-butene gives mainly styrene formed by hydride shift and the isomeric cycloaddition products 60—62 139) ... 

Buten 3-Hydroximino-2-methyl-l-(4-methyl-phenyl)-E14b, 315 (aus En — on)... 

Catalytic hydrosilylation of alkenes performed in the presence of a chiral catalyst results in the formation of chiral silanes. Initially platinium catalysts of the type L PtCl2, L = (/ )-benzyl-(methyl)phenylphosphine (BMPP) or (/ )-methyl(phenyl)propylphosphine and 1,1-disubstituted prostereogenic alkenes, such as a-methylstyrene, 2,3-dimethyl-l-butene and 2-methyl-l-butene, were used however, the stereoselectivity was low4,5. A slightly higher stereoselectivity is obtained when dichlorobis[(/ )-benzyl(methyl)phenylphosphine]nickel [Ni(BMPP)2Cl2] is used as the catalyst. Note that two chiral silanes are formed in this reaction, both of which are products of anti-Markovnikov addition. The major product is the expected dichlorosilane 3, while the byproduct is an anomalous chlorosilane 4 both products were separated by fractional distillation and the major product methylated to give the trimethylsilanes 56 7. 

Phase-transfer catalysts, 220, 221,305-306 Phenanthrenes, 319, 320 9-Phenanthrol, 431 Phenol annelation, 272 Phenoxysulfonyl azide, 377-378 Phenylacetaldehyde, 217 Phenylacetylene, 7 2 (S)-3-Phenyl-1-butene, 36 Phenyl chlorothionocarbonate, 306-307 Phenyl cyanate, 307-308 Phenyldiazomethane, 308 o-Phenylene phosphorochloridate, 91-92 o-Phenylglydne methyl ester, 308 Phenyl isocyanate, 309 Phenyl isocyanide, 309-310 Phenyl iso thiocyanate, 122 Phenyllithium, 5... 

Similar levels of regiocontrol were observed in the condensation of A- N,N-diethylamino)-l,l,l-triflnoro-3-phenyl-3-buten-2-one and methyl-, phenyl-, and p-nitrophenyl hydrazines in acetonitrile (58-83 % yield). With methylhydrazine, the major isomer was the 3-triflnoromethyl-l-methyl-4-phenylpyrazole (ratio 2.5 1), whereas with phenylhydrazine, the 5-trifluromethylpyrazole analogue was the predominant component in a 11 1 mixture of isomers. This regioisomer was the only product observed when p-nitrophenylhydrazine was used [38]. 

This test method has been found applicable to the measurement of impurities such as cumene, 3-methyl-2-cyclopentene-l-one, n-propylbenzene, fert-buytlbenzene, sec-butylbenzene, cw-2-phenyl-2-butene, acetophenone, 1-phenyl-1-butene, 2-phenyl-2-propanol, and fra s-2-phenyl-2-butene, which are common to the manufacturing process of AMS. The limit of detection for these impurities is 0.01 wt %. 

Indene derivatives 264a and 264b are formed by the intramolecular reaction of 3-methyl-3-phenyl-l-butene (263a) and 3,3,3-triphenylpropylene (263b) [237]. Two phenyl groups are introduced into the /3-substituted -methylstyrene 265 to form the /3-substituted /3-diphenylmethylstyrene 267 via 266 in one step[238]. Allyl acetate reacts with benzene to give 3-phenylcinnamaldehyde (269) by acyl—O bond fission. The primary product 268 was obtained in a trace amount[239]. 

It is known that tr-allylpalladium acetate is converted into allyl acetate by reductive elimination when it is treated with CO[242,243]. For this reason, the carbonylation of allylic acetates themselves is difficult. The allylic acetate 386 is carbonylated in the presence of NaBr (20-50 mol%) under severe conditions, probably via allylic bromides[244]. However, the carbonylation of 5-phenyl-2,4-pentadienyl acetate (387) was carried out in the presence of EtiN without using NaBr at 100 °C to yield methyl 6-phenyl-3,5-hexadienoate (388)[245J. The dicarbonylation of l,4-diacetoxy-2-butene to form the 3-hexenedioate also proceeds by using tetrabutylphosphonium chloride as a ligand in 49% yield[246]. 

Organocopper-boron trifluoride (RCu BF3) reacts with allylic alcohols, such as 3-phenyl-2-propenol, 2-butenol, 3-buten-2-ol, 2,4-hexadienol, 3-methyl-2-butenol, to give the y-alkylation... 

C. (E)- -Iodo-4 -phenyl-2-butene. In a 20-ml., round-bottomed flask are placed 2.0 g. (0.008 mole) of 2-(4/-phenyl-l -buten-3 -yl)thio-2-thiazoline, 5 ml. of methyl iodide [Methane, iodo-], and 2 ml. of di-methylformamidc. The resulting solution is heated at 75-80° for 2.5 hours under a nitrogen atmosphere (Note 13), cooled, and poured into 10 ml. of water. Extraction with three 12-ml. portions of ether separates the product from water-soluble by-products. The extracts are combined, washed with 8 ml. of 1% aqueous sodium thiosulfate and two 8-ml. portions of water, dried over anhydrous magnesium sulfate, and filtered to remove the drying agent. Removal of ether by distillation at 30° (100 mm.) leaves 1.5-1.7g. (74-82%) of ( )-l-iodo-4-phenyl-2-butene (Notes 14 and 15). 

Thiazoline, 2-methylthio [Thiazole, 4,5-dihydro-2-(methylthio)-], 82 2-Thiazolme, 2-(4-phenyl 1 buten-3-yl)thio-[Thiazole, 4,5-dihydro-2-[ [ l-(phenyl-methyl)-2-propenyl] thio] -], 78 Tluazolium,. V-inethyl-2-methylthio-,... 

Bei der Hydroaluminierung von Alkinen tritt die Oligomerisierung oft bereits bei nied-rigeren Temperaturen in den Vordergrund. So erhalt man z.B. aus 3,3-Dimethyl-l-phe-nyl-butin (I) und Bis-[2-methyl-propyl]-aluminiumhydrid (1 1) bei 50° 94% d.Th. cis-3,3-Dimethyl-l-phenyl-buten-(l) (II)5 neben 6% d.Th. trans,trans-2,2,7,7-Tetramethyl-4,5-diphenyl-octadien-(3,5) (III) ... 

Benzaldehyd + l-Brom-buten-(2) 4-Hydroxy-3-methyl-4-phenyl-buten-( I) ... 

Ketones such as methyl cyclohexyl ketone 1284 react with DMSO/TCS 14, via their enol form, to give 21% of the chloroketone 1285 a and 63% of the a-methyl mercaptoketone 1286 [70]. Reaction of 1284 with DMSO/MesSiBr (TBS) 16 affords 85% of the bromo compound 1285 b and 12% hexahydrophenacyl bromide 1287 but no 1286 [71]. Whereas reaction of tra s-4-phenyl-3-buten-2-one (benzalacetone) 1288 with DMSO/TCS 14 gives 81% of the sulfonium salt 1289 [70], the y9-dicar-bonyl compound ethyl acetoacetate furnishes 69% of 1290 [70]. In contrast with DMSO/TCS 14, the combination DMSO/TBS 16 effects selective monobromina-tion of y9-dicarbonyl compounds [71] (Scheme 8.28). 

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