1) 3-formyl-5,6-dihydro-2H-thiopyran
3-甲酰-5,6-二氢噻喃
1.
3-Formyltetrahydrothiopyran was prepared by hydrogenating a 3-formyl-5,6-dihydro-2H-thiopyran in the presence of a catalyst and 3-fromyl-5,6-dihydro-2H-thiopyran was prepared by reacting an acrolein with hydrogen sulfide.
3-甲酰四氢噻喃是噻草酮的重要中间体,3-甲酰四氢噻喃的合成采用以丙烯醛和硫化氢为原料首先得到3-甲酰-5,6-二氢噻喃,然后3-甲酰-5,6-二氢噻喃在催化剂作用下氢化得到目标产物的合成路线。
2) 3-formyltetrahydrothiopyran
3-甲酰四氢噻喃
1.
Synthesis of 3-formyltetrahydrothiopyran;
中间体3-甲酰四氢噻喃的合成
3) Dihydropyrandione
3-芳胺甲烯基-5,6-二氢-二氢吡喃-2,4-二酮
4) 2-methyl-3-carbethoxy-5,6-dihydropyrane
2-甲基-3-乙基羰基-5,6-二氢吡喃
5) Ethyl 3,4-dihydroxy-6-methyl-2H-pyran-5-carboxylate
5,6-二氢-3-乙氧羰基-2-甲基-4H-吡喃
6) 2-methyl-5,6-dihydro-2H-pyrane
2-甲基-5,6-二氢-2H吡喃
1.
Synthesis of 2-methyl-5,6-dihydro-2H-pyrane using BF_3-ethyl ether as catalyst;
BF_3-乙醚催化合成2-甲基-5,6-二氢-2H吡喃
补充资料:二氢噻喃
分子式:
CAS号:
性质:有二种异构体:△2-二氢噻喃,沸点142.5℃,折射率1.5330,由△2-二氢吡喃与硫化氢共热制取;△3-二氢噻喃,沸点35~36℃(1.59kPa),折射率1.5328,由4-羟基四氢噻喃用硫化铜催化脱水制得。均用于有机合成。
CAS号:
性质:有二种异构体:△2-二氢噻喃,沸点142.5℃,折射率1.5330,由△2-二氢吡喃与硫化氢共热制取;△3-二氢噻喃,沸点35~36℃(1.59kPa),折射率1.5328,由4-羟基四氢噻喃用硫化铜催化脱水制得。均用于有机合成。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条