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Extra resources for Organic syntheses: An annual publication of satisfactory methods for the preparation of organic chemicals Organic synthesis). Volume XVI

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This is shown by: A study of this reaction is an appropriate example of the usefulness of spectroscopic method in mechanistic studies. 2 of Fig. 11 to be present in the reaction mixture. 2. 3. 3 as a catalytic intermediate. 3 Model Compounds and Theoretical Calculations Many compounds have been synthesized, characterized, and studied as models for proposed intermediates in various homogeneous catalytic reactions. Here we discuss two examples. 4 is proposed as a model that shows the mode of interaction between an organic hydroperoxide and high-valent metal ions such as Ti4ϩ, V5ϩ, and Mo6ϩ.

4 is proposed as a model that shows the mode of interaction between an organic hydroperoxide and high-valent metal ions such as Ti4ϩ, V5ϩ, and Mo6ϩ. This type of interaction is considered to be necessary for the oxygen atom transfer from the hydroperoxide to an alkene to give an epoxide (see Chapter 8). 11 Catalytic intermediates identified and proposed on the basis of multinuclear lowtemperature NMR studies on cyclopropanation of alkenes with derivatives of diazomethane. 5, is a model for a hydrido–alkyl complex.

1 Liquid Gas–liquid Gas or liquid Gas–liquid Gas–liquid Liquid Liquid–solid Liquid–solid 1. Gas–liquid–solid or gas–liquid 2. In most cases solid with gas and/or liquid Phases Atmospheric pressure, Ϫ10–100ЊC Vacuum to atmospheric pressure, Ϫ10–100ЊC Vacuum to 100 psi, Ϫ10–200ЊC Atmospheric to 50 psi, 30–100ЊC Atmospheric to 50 psi, Ϫ10–200ЊC Atmospheric to 100 psi, Ϫ10–120ЊC Atmospheric to 100 psi, 30–200ЊC Atmospheric pressure, Ϫ10–100ЊC 0–300 psi, 50–200ЊC Normal operating conditions REACTOR DESIGN 39 while it keeps decreasing along the length of the tube in a tubular reactor.

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