𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Measurement of urine porphyrins and porphyrinogens

✍ Scribed by K.G. Jones; G.D. Sweeney

Book ID
115766556
Publisher
Elsevier Science
Year
1976
Tongue
English
Weight
628 KB
Volume
15
Category
Article
ISSN
0006-2944

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## Abstract Treatment of 1,8‐diethynylanthracene with __n__‐butyllithium and __N__‐formylpiperidine at −5°C gives a mixture of the monoaldehyde 4 and the dialdehyde 2. Further reaction of these aldehydes with the 2,2′‐dipyrrylmethane 1 affords the bridged porphyrinogen 3 and the __meso__‐substitute