Methylene Definition

Methylene Sentence Examples

• The true nitrile of malonic acid is methylene cyanide, CH 2 (CN) 2, which is obtained by distilling a mixture of cyanacetamide and phosphorus pentoxide.

• A larger and more important series of condensations may be grouped together as resulting from the elimination of the elements of water between carbonyl (CO) and methylene (CH 2) groups.

• Pyrrol is readily converted into pyridine derivatives by acting with bromoform, chloroform, or methylene iodide on its potassium salt, t3-brom-and O-chlorpyridine being obtained with the first two compounds, and pyridine itself with the last.

• Conversely, by heating protocatechuic acid with potash and methylene iodide, piperonylic acid was regained.

• These results show that piperonylic acid is the methylene ether of protocatechuic acid.