WebJun 11, 1999 · Particularly noteworthy were the excellent yields of propargylic aldehydes 9 obtained by direct formylation ofalkynes 8 using procedure developed by Cai and co-workers at Merck.7 A modification of the procedure of Smith was adopted for bromination,s resulting in efficient conversion and circumventing ring opening (10 R2= cyclopropyl ... WebApr 10, 2024 · Importantly, the results were obtained while circumventing the lengthy run times often encountered when utilizing LC- or GC-based methods to quantify cannabinoids. ... The following parameters were used at both locations: ring lens, 5 V; orifice 1 voltage, 20 V; orifice 2 voltage, 5 V; peak voltage, 600 V; and detector voltage, 2000 V. The DART ...
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