Detail of "6540-33-6"

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Supplier:Hangzhou Dayangchem Co., Ltd. [ China (Mainland)]

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Malonaldehyde derivatives: a general one- or two-step synthesis from substituted acetic acids: Malonaldehyde derivatives: a general one- or two-step synthesis from substituted acetic acids. Knorr, Rudolf; Loew, Peter; Hassel, Petra; Bronberger, Hildegard (Inst. Org. Chem., Univ. Munich, Munich D-8000/2, Fed. Rep. Ger.). J. Org. Chem., 49(7), 1288-90 (English) 1984. 3724-43-4 and 6540-33-6 which are cas registry numbers of chemicals are mentioned. CODEN: JOCEAH. ISSN: 0022-3263. DOCUMENT TYPE: Journal CA Section: 21 (General Organic Chemistry) Acetic acids RCH2CO2H (R = Me, PhCH2, Me2CH, cyclobutyl) treated with (Me2CH)2NLi and then Me2N+:CHOMe MeSO4- underwent decarboxylative double formylation at or below 50-60° to yield malonaldehydes RCH(CHO)2 (I). Other I (R = mesityl, Ph, 2-thienyl, Me3C, 1-adamantyl) were obtained by treating enamines RCH:CHNR12 (R12N = Me2N, morpholino) (prepd. from RCH2CO2H) with Vilsmeier reagents R12N+:CHCl Cl-. .