20 15. JOSEPH WELDON MELTON AND HENRY R. HENZE Vol. 69 p- Dimethylaminophenylethynylcubinol, 0-Hydroxyphenylethynylcarbinol and Benzylethynylcarbinol each resulted in fair yields for the use of the respective aromatic aldehydes. In no case did the product hold together through a distillation under strongly reduced pressure in an atmosphere of nitrogen. Usually the aldehyde was recovered in ...