Letter | Published:

Waage's Phytochemical Synthesis of Phloroglucin from Glucose

Naturevolume 105page391 (1920) | Download Citation



IT is generally stated that phloroglucin is formed by floating leaves in sugar solutions when exposed to sunlight. This phytochemical conversion of an aliphatic chain into an aromatic ring-compound is basedon observations published by Waage in 1890 (Berichte der deutschen botanischen Gesellschaft, vol. viii., p. 250), which have found their way into nearly every text-book on the subject (compare, for example, M. Wheldale Onslow, “Practical Plant Biochemistry,” p. 7, which hasjust been published). The fascination of this simple experiment and its general importance to plant chemistry have made me repeat it every summer for the last fifteen years, but not in a single case, out of nearly eightyexperiments, did I succeed in detecting even the slightest trace of phloroglucin. For the detection of phloroglucin I used the pine-wood test, as recommended by Waage, and also the bromine-water test after extraction with ether.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.


All prices are NET prices.

Author information


  1. University of Bristol



  1. Search for M. NIERENSTEIN in:

About this article

Publication history

Issue Date




By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.