A Rapid and Convenient Technique for converting Ketones into their Ethylenedioxy- or Trimethylenedioxy-derivatives, and for making Acetonides (Record no. 44220)

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Transcribing agency CICY
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Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-9978
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Title A Rapid and Convenient Technique for converting Ketones into their Ethylenedioxy- or Trimethylenedioxy-derivatives, and for making Acetonides
490 0# - SERIES STATEMENT
Volume/sequential designation Journal of Chemical Society Perkin Transation 1, p.158-160, 1979
520 3# - SUMMARY, ETC.
Summary, etc. The ethylenedioxy-derivatives (ethylene acetals)of unhindered steroid. triterpene. and other ketones can be prepared by running a mixture of the ketone and ethylene glycol in tetrahydrofuran through an acid ion-exchange column and isolating the derivative from the eluate. This technique is particularly appropriate where such compounds are to be subjected to mass spectrometry but can also be used on a larger scale in synthetic sequences where protection of the carbonyl group is desired. The homologous (cyc!ic trimethylenedioxy-)derivatives. better for the latter purpose in certain cases. can be prepared in the same way. as can the acetonides of 1.3-dihydroxycompounds.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Dann. A.E.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Davis. J.B.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Nagler, M.J.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/1hKxQOyGV8CeEKvTtXh6zccN5WqBxP1Mq/view?usp=drivesdk">https://drive.google.com/file/d/1hKxQOyGV8CeEKvTtXh6zccN5WqBxP1Mq/view?usp=drivesdk</a>
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-9978 25.06.2025 25.06.2025 Documentos solicitados