✍ Scribed by Pertti Äyräs; Kalevi Pihlaja
No coin nor oath required. For personal study only.
Irrespective of the fact that 1,3-dioxans have been recently intensively stud. ied very little attention has been paid to the preparation of 4-0x0-1,3dioxans? s2Hennes and Gundiger2 synthesised some chlorinated derivatives in concentrated sulphuric acid starting from chloral hydrate and a chlorinated J-hydroxy acid and investigated their herbicidal influences. Kahn, Jr. and Cohen studied the effect of 2,2,6-trimethyl-4-oxo-1,3-dioxan on cation transfer in incubated cold-stored human erythrocytes.' Taking into account also their conformationally interesting structure we wish to report the preparation of several methyl-substituted 4-0x0-Y ,3-dioxans by condensing 3-hydroxy
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## Abstract The cyclization of phenacyl anthranilate has been studied with the aim to develop the synthesis of 2‐(2′‐aminophenyl)‐4‐phenyloxazole. However, a different course of the reaction than expected was observed. 2‐Phenyl‐2‐hydroxymethyl‐4‐oxo‐1,2,3,4‐tetrahydroquinazoline (**3a**) was formed
During p r e l i m i n a r y work with u n l a b e l l e d compounds, an attempt was made t o carbonate t h e Grignard r e a g e n t prepared from 2-bromo-2-methylpropane according t o i. No a c i d was i s o l a t e d .