1927-68-0, 2-BUtoxytetrahydro-2H-pyran is a Tetrahydropyrans compound, ?involved in a variety of chemical synthesis. Rlated chemical reaction is continuously updated
Example 4:; Reduction reaction was performed by carrying out the same procedures as in Example 2 except that 23.46 g of 3,4-dihydro-2- butoxy-2H-pyran(DHBP) was used instead of 3,4-dihydro-2-methoxy- 2H-pyran(DHMP) . As a result, the yield of tetrahydropyran(THP) was 95 %. Tetrahydro-2-butoxy-2H-pyran(THBP) was not detected while butanol was generated at a yield of 96 % based on raw material.; Example 7:; Reduction reaction was performed by carrying out the same procedures as in Example 6 except that 32.30 g of tetrahydro-2- butoxy-2H-pyran(THBP) was used instead of tetrahydro-2-methoxy- 2H-pyran(THMP) . As a result of analysis on the reaction mixture after the reaction, the yield of tetrahydropyran(THP) was 94 %. THBP was not detected and butanol was generated at a yield of 92 % based on the amount of raw material.; Example 15:; Mass synthesisIn a 100 L-volume autoclave made of stainless-steel, 46.9 kg of 3,4-dihydro-2-butoxy-2H-pyran (DHBP) and 0.64 kg of 5 mass % palladium /activated carbon powder(Pd/C) were placed. The inside of the reactor was purged with hydrogen and after hydrogen was introduced to 0.8 MPa, reaction was performed for 2.5 hours at room temperature while stirring. During the reaction, hydrogen gas was introduced so that the pressure of 0.8 MPa was maintained. After the 2 hours, no DHBP as the raw material was detected while tetrahydro-2-butoxy-2H-pyran (THBP) was generated quantitatively. To the reaction mixture, 0.42 kg of sodium hydrogen sulfate monohydrate was added and the pressure was increased to 0.8 MPa. Reaction was performed for 10 hours at 80 C while continuously introducing hydrogen, and with the pressure increased to 1.5 MPa, the reaction was further performed for 2 hours. As a result of analysis on the reaction mixture after the reaction, the yield of tetrahydropyran(THP) was 94 %. Also, butanol was generated at a yield of 95% based on the raw material. The reaction mixture was subjected to distillation in the same manner as in Example 14, to thereby obtain THP. The results are shown in Table 2.Table 2, 1927-68-0
1927-68-0 2-BUtoxytetrahydro-2H-pyran 263176, aTetrahydropyrans compound, is more and more widely used in various fields.
Reference£º
Patent; SHOWA DENKO K.K.; WO2006/62211; (2006); A1;,
Tetrahydropyran – Wikipedia
Tetrahydropyran – an overview | ScienceDirect Topics