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PROCESS FOR PREPARATION OF 55BROMOO3*44 DIHYDROO2HHPYRANN2*44D10NE DER IVATIVES
PROCESS FOR PREPARATION OF 55BROMOO3*44 DIHYDROO2HHPYRANN2*44D10NE DER IVATIVES
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机译:制备55BROMOO3 * 44 DIHYDROO2HHPYRANN2 * 44D10NE DER IVATIVES的方法
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摘要
PURPOSE:5-Brono-3,4-dihydro-2H-pyran2,4-dione derivatives 1 where R1 and R2 are lower alkyl, R3 is lower alkyl or lower alkenyl, excepting both R1 and R2 methyls.
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