Current Chemical Reactions

Theilheimer and the Annual Reports on Organic Synthesis, mentioned in the previous section, list new synthetic methods once a year. There are several publications that do this monthly. Among these are Current Chemical Reactions (begun in 1979 and published by ISI), Journal of Synthetic... 

One criticism of reaction indexes has been the lack of completeness in the databases of reactions. This criticism is being answered by the introduction of databases such as the ISI Current Chemical Reactions database and the CAS reaction database now under development. As was previously mentioned for structure databases, a single graphical query interface for searching both in-house and external reaction databases would be of great value to the end-user chemist. 

Examples are ISI s Current Chemical Reactions database and Index Chemicus subset databases as well as the Rhone-Poulenc pK database. 

Current Chemical Reactions In-house Database - Growing database of 30,000 recently published reactions, available from ISI Software, 3501 Market Street, Philadelphia, PA 19104, U.S.A. 

ISI do direct abstracting from the primary literature to produce the Current Chemical Reactions (CCR) database. 

If the voltage source used were direct current, chemical reactions might occur and deposits or gases evolving at the electrodes would change the electrical resistance. This effect, known as polarization of the... 

Current Chemical Reactions Curr. Chem. / eact),(1979-),ISI,Inc.,Philadelphia. 

It has been reported that a novel method for retrieving reactions similar to a given query reaction is to use relationships created by literature citations. Later publications citing a new reaction are likely to contain pertinent information about related reactions. In this study of all citing papers to 50 new s3oithetic methods indexed in Current Chemical Reactions, approximately half of the papers found by cited reference searching would not have been retrieved with reaction or substructure search approaches. 

A random sample of 50 reactions was selected from the June/July 1986 issues of Current Chemical Reactions (CCR). These reactions were pubhshed in the primary literature during the first quarter of 1986. This group of 50 reactions served as the core group for identif3dng the citing papers. 

Such multi-step reaction schemes are common in the hterature of organic chemistry. The Current Chemical Reactions journal (CCR), pubhshed by the Institute for Scientific Information (ISI) is composed largely of extended schemes,... 

ACD = Available Chemicals Directory (MDL) CA = Chemical Abstracts, CAS = Chemical Abstracts Service CCR = Current Chemical Reactions, CHC = Comprehensive Heterocyclic Chemistry, CRDS = Chemical Reaction Documentation Service CSM = Current Synthetic Methodology,... 

Current awareness of new chemical reactions can. in principle. be organized in databases as for other types of queries, with search profiles that are automatically executed at each database update ( alerts . SDls ). Because of the frequency of updating (see Section 3.2), at present this only makes sense for CASREACT. Although the printed current awareness journals, such as the Journal of Synthetic Methods, Current Chemical Reactions, Methods in Organic Synthesis, and Cheminform RX are all available in electronic form, both as in-house databases for MDL s REACCS or ISIS system, and, with the exception of Current Chemical Reactions and Methods in... 

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