4-Butyl-2-mcthyl

T rimethylsilylethoxy-mcthyl)-2-(tri-n-butyl-stannyl)indole 3-Bromopropene, Pd,(dba)j, tri-(2-furyl)phosphine 93 [1]... 

Bromination of 7-ter/-butyl, 2-mcthyl 5-methyl-4//-azepine-2,7-dicarboxylate (7) with 1 equivalent of jV-bromosuccinimide yields 2-terf-butyl,7-methyl 4-(bromomethylene)-4,5-dihvdro-l//-azepinc-2,7-dicarboxylate (8) as a 1 2 mixture of the E- and Z-isomers.113 With an excess of reagent the dibromomethylene compound 9 results. 

Phenyl-(4-chlor-phenyl)- 542 Phenyl-(4-fluor-phenyI)- 410 PhenyI-[4-(3-hydroxy-butyl)-phenyl]- 296 Phenyl-(2-hydroxymethyI-phcnyl)- 229 Phenyl-(4-hydroxymethyI-phenyl)- 324 PhenyI-(2-hydroxy-phenyl)- 159 Phenyl-(3-methoxy-phenyl)- 410 Phenyl-(4-mcthyl-phenyI)- 410 Phenyl-naphthyl-(l)- 411 Phenyl-[4-(3-oxo-butyl)-phenyl]- 296 Phenyl-pyridyI-(2)- 492 Phenyl-(2,4,6-trimethyI-phenyl)- 411 Triaryl- 561 Trideutero-... 

Bis-[2-bcnzoyl-phcnyl]- 678 Bis-[4-tert.-butyl-benzyl)- 625 Bis-[cyan-mcthyl]- 703 Bis-[3,4-dichlor-benzyl]- 625 Bis-[diphenylmethyl]- 609 Bis-[4-methoxy-phcnyIJ- 625 Bis-[4-methyI-benzyl]- 625 Bis-[4-methyI-phenyI]- 625 Bis-[1 -naphthyl-(l )-iithyl]- 609 Bis-[3-oxo-butyI]- 585 Bis-[tridecafluor-hexyl]- 624 Cyanmcthyl- -chlorid 702 Dibenzyl- 622 Dicyclohexyl- 609 Didecyl- 623 f. 

In going from a secondary to a tertiary cycloalkyl fluoride, one observes the usual deshielding effect as is exemplified by the isomeric 1 -lluoro-1 -mcthyl-4-t-butylcyclohcxancs. Of course, these two isomers exist essentially in the single conformation given, because of the presence of the 4-t-butyl substituent. 

Fig. 2 Examples of the structures of a few fast-response electric filed sensitive dyes N-(4-sulpho-butyl)-4-(4-(4-(dipentylamino)phenyl)butadienyl)pyridinium inner salt (RH421, a styrylpyridinium dye), ANNINE 5 (an annellated hemicyanine dye), merocyanine 540, and N-[(4 -dimethylamino)-3-hydroxy-6-flavonyl mcthyl-N,N-trimcthyl ammonium (F4N1, a 3-hydroxychromone dye)...

Optimal selectivities of cinnamate aziridines are provided by the phenyl-substituted bis(oxazoline) (55d). In contrast, /ra .v-p-mcthyl styrene proved to be most selective with ferf-butyl substituted 55c and acetonitrile as solvent, Eq. 56, conditions that afford the cinnamate ester-derived aziridine in only 19% ee. Styrene is a poor substrate for this catalyst and provides the opposite antipode as the major enantiomer from the same ligand, Eq. 57. 

Floor varnish Butyl acetate, /V-mcthyl pyrrol idonc... 

A neutral diblock copolymer consisting of poly[(butyl acrylate)-b-(2-di mcthyl-aminoethyl acrylate)] was prepared by Bavouzet et al. (4) and used in cosmetic formulations. 

A LDE. 11Y D1S Bis(3-mcthyl-2-butyl)-boranc. Dichlorodicyanobenzoqui-none. 1-Diphenylphosphonio-l-meth-oxymethyllilhium. Disodium tetra-earbonyl terraIc. Grignard reagents. 

Disulfane Bis-[2.2-difluoro-l-mcthyl-butyl]-E10b,. 173 (3-Pentanon + S2C12/SF4)... 

N-tert.-Butyl 2-Fluom-4-mcthyl-benzene- ElOa, 473 (H -> F)... 

Heptanoate Mcthyl-3,3-Difluoro-6.6-dimethyl-2-mcthoxy-4-oxo-E10b2, 219 (CH = C-OR -> CH2-CO, COOH - COOR) 4-Heptenoate Ethyl 3.3-Difluoro-4-(methoxy-melhoxy)- E10b2, 215 [F,C = C(OR )-CIl(OH)-C2H 5 + h3( -C(OR2)j Malondioate Diethyl 3,3-Difluoro-butyl- ElOa. 136 (En + HE ... 

Di-tert.-butyl-4-(2-fiuoro-3-hydr-oxy-3-phenyl-propanoyloxy)-l-mcthyl- ElOb, 454(Ar-CHO + F-CH2-COOR)... 

Selective epoxidation. One step in a total synthesis of DL-14a-methylestrone 3-mcthyl ester (4) is the epoxidation of the hindered C, double bond of 1. lipoxidation with f-butyl hydroperoxide catalyzed by molybdenum carbonyl gives a mixture of the desired a-epoxide (2) and the -isomer (3) in a 5 1 ratio in almost quantitative yield. The same epoxides are obtained with m-chloroperbenzoic acid, hut with opposite stereoselectivity. The a-epoxide (2) is rearranged to 4 by BF3 clhcrate.1... 

The incorporation of TEMPO alkoxy amine at the end of a PE chain has been achieved [99]. The dialkylmagnesium compound in ethylene polymerization was adopted as a chain transfer agent, as mentioned above. It was also reported that PE-TEMPO and terminally N-(2-mcthyl-2-propyl)-N-(l-diethylphosphono-2,2-dimethylpropyl)-N-oxyl PE were synthesized by the reaction with di-polyethylene magnesium produced in ethylene polymerization. They were used for CRP of n-butyl acrylate, leading to PE-h-PnBA. 

Mcthyl-3,4-dihydroxy-5-/-butylphcnyl)-3-mcthyl-6-/-butyl-l, 2-benzoquinone (H2CatMe — BQMe) (356mg, 1 mmol) was dissolved in 10mL of methanol and slowly added to an aqueous solution of LiOH (48 mg, 2 mmol). The solvent was evaporated and the dark blue powder was dried in vacuo. Li2(SQMe — SQMe) was obtained in 80% yield (293 mg). 

SCHEME 4.5 1,2-Migration in the stereoselective synthesis of 1, 2-tram (amino)-glyco-sides and 2-deoxyglycosides as reported by (a) Danishefsky, (b) Yu, and (c) Lowary. Ac, acetyl All, allyl Bn, benzyl Bz, benzoyl DTBMP, 2,6-di-fert-butyl-4-mcthyl pyridine TBDPS, ferf-butyldiphenylsilyl THF, tetrahydrofuran TIPS, triisopropylsilyl Tol, 4-tolyl. 

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