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. Each preparation was dried in CO2at critical point, and finally sputter-coated with Au/Pd. Specimens were observed in a Hitachi S-4700 SEM, with an accelerating voltage of 5 keV and an emission current of 15 µA, at a working distance of ~11 mm, using a secondary-electron d...
PD-P-120 PDM80-2510-012 PE8 PEAK-SYSTEM PEAK-System Technik GmbH PEDROLLO PEI2-032-0025-I-P-M PEKOMP PENNY+GILES PENTRONIC PERMA PETEC POWER STAHL PEWATRON AG PFAWC0400000 – Levtrol 2N PGT120 PHV PI1108MIC10 PICKER SA PICO+25/I PIER-ELECTRONIC PIL PIL Sensoren PKP PROZESSMESSTECHNIK...
The first attempts of coupling/cyclization were carried out between TFP-protected 4- ethynylphenol 4 and bromoaldehyde 5a using Pd(PPh3)4 as the catalyst, CuI as co-catalyst, and PPh3 as ligand in anhydrous triethylamine (TEA) at 90 °C, and did not afford the expected product (Table 1)...