5-isopropyl-4-phenyl

Isopropyl phenyl ether + excess hydrogen bromide + heat... 

Characteristic Isopropyl phenyl diphenyl ester t-Butylphenyl diphenyl phosphate Dibutyl phenyl phosphate Nonylphenyl diphenyl phosphate... 

Characteristic 2-Ethylhexyl diphenyl phosphate Isodecyl diphenyl phosphate Tri-n-butyl phosphate Tris-isopropyl phenyl phosphate... 

Yang SM, Thieme RA, von Meyerinck L, et al. 1990. Identification of isopropylated phenyl phosphates in rabbit bile. Biomed Environ Mass Spectrom 19 573-576. 

The first structurally characterized triarylzincate [Li(TMEDA)2][Zn 2,4,6-(Pr1)3G6H2 3] 59 was a byproduct of the lithiation of VC13(THF)3 with Li(2,4,6-(Pr1)3C6H2)3, in which the vanadium compound had been pre-reduced with metallic zinc.116 In the solid state, the compound consists of isolated, tetrahedrally coordinated lithium ions and trigonal-planar tris(tris(isopropyl)phenyl)zincate ions. The Zn-G bonds are equidistant (2.039(7) A), but the C-Zn-C bond angles are variable, ranging from 112.2(3)° to 125.4(3)°. 

The pentacoordinate oxazaphosphetidines 53 (Tip = tri(isopropyl)phenyl) are related to intermediates in the aza-Wittig reaction. Thermolysis of 53 shows that the compound displays two types of reactivity as an azaphosphetidine to give 51 and 52 and as an oxaphosphetane to yield 54 and 55 <00TL5237>. 

Recently, poly(vinyl alcohol)-isocyanate reactions have been run successfully in dimethylsulfoxide solutions by several lab- oratories, including ours. While there are reports of solvent derived products from the reactions of isocyanates in DMSO (60), these reactions do not seem to pose a problem in the reaction with poly(vinyl alcohol). This solvent has been used to react PVA with methoxymethyl isocyanate (61.62) and a series of isocyanates including methyl, ethyl, isopropyl, phenyl and 1-naphthyl (63). This reaction is illustrated in Equation 17 where R is... 

A series of bis(thiophosphinic amido) yttrium complexes 86a-h was promising due to their high rates and enhanced control of the L-lactide polymerization activity with high polymerization rates A app = 2.2 x lO to 1.1 x 10 s at [LA]q = 1 M, [l]o = 5 mM [104]. It is worth noting that the phosphorous substituents greatly influenced the rate of the reaction, and that the rate followed the order isopropyl > phenyl > ethoxy. 

Similar effects are also seen with enolates of simple ketones. For isopropyl phenyl ketone, the inclusion of one equivalent of 12-crown-4 in a DME solution of the lithium enolate changes the C/O-alkylation ratio from 1.2 1 to 1 3, with methyl sulfate as the alkylating agent.50 With methyl iodide as the alkylating agent, C-alkylation is strongly favored with or without 12-crown-4. 

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