PART II Main Group Elements

2-diols. Benzyl selenides undergo a facile alkyl-lithium- 

The alkylation of secondary amides, on carbon, usually requires either -protection or the generation of a polyanionic species. Benzamidoacetone undergoes deprotonation to give a monoanion that 

Further studies on the site of kinetic deprotonation of a,B-unsaturated acids and esters have been reported. As a rule 

However, on using a hindered amide base, rather than an alkyl- 

The reaction of alkyl-lithium reagents with symmetrically substituted ketenes provides a valuable route to directed enolates 10 

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PART II Main Group Elements by P. F. Gordon and M. G. Hutchings... 

The next five chapters deal with deposition of specific groups of semiconductors. In Chapter 4, II-VI Semiconductors, all the sulphides, selenides, and (what little there is on) tellurides of cadmium (most of the chapter), zinc (a substantial part), and mercury (a small part). (Oxides are left to a later chapter.) This chapter is, understandably, a large one, due mainly to the large amount of work carried out on CdS and to a lesser extent on CdSe. Chapter 5, PbS and PbSe, provides a separate forum for PbS and PbSe, which provided much of the focus for CD in earlier years. The remaining sulphides and selenides are covered in Chapter 6, Other Sulphides and Selenides. There are many of these compounds, thus, this is a correspondingly large chapter. Chapter 7, Oxides and Other Semiconductors, is devoted mainly to oxides and some hydroxides, as well as to miscellaneous semiconductors that have only been scantily studied (elemental selenium and silver halides). These previous chapters have been limited to binary semiconductors, made up of two elements (with the exception of elemental Se). Chapter 8, Ternary Semiconductors, extends this list to semiconductors composed of three elements, whether two different metals (most of the studies) or two different chalcogens. 

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