作者:Neil Baggett、J. Grant Buchanan、Moutie Y. Fatah、C. H. Lachut、Kevin J. McCullough、John M. Webber
DOI:10.1039/c39850001826
日期:——
The product of the reaction of D-ribono-1,4-lactone with benzaldehyde and concentrated HCl has been shown, by X-ray crystallography of its acetate, to be 3,4-O-(R)-benzylidene-D-ribono-1,5-lactone and not the 3,5-acetal as previously suggested; with ZnCl2 as catalyst the products are 2,3-O-(R)- and -(S)-benzylidene-D-ribono-1,4-lactone the former preponderating.
D -ribono-1,4-内酯与苯甲醛和浓盐酸的反应产物,通过其乙酸盐的X-射线晶体学显示为3,4- O-(R)-亚苄基-D- ribono -1,5-内酯,而不是以前建议的3,5-乙缩醛;用ZnCl 2作为催化剂,产物是2,3- O-(R)-和-(S)-亚苄基-D-核糖-1,4-内酯,前者占优势。