Abstract: Compounds and use of the compounds for formula (I) where X is selected from the group consisting of a single bond, O, N—(C1-C4)-alkyl, N—Ar1, CR5R6, S, S(O) and SO2; Z1 and Z2 are independently selected from hydrogen, -Alk-OH, —CH2—Ar2—CH2—OH, -Alk?-C(O)ORx, —CH2—Ar2—C(O)ORx and —C(O)—Ar2—C(O)ORx, where Rx is selected from the group consisting of hydrogen, phenyl, benzyl and C1-C4-alkyl; R1 and R2 are independently selected from the group consisting of optionally substituted mono- or polycyclic aryl having from 6 to 26 carbon atoms as ring members and optionally substituted mono- or polycyclic hetaryl having a total of 5 to 26 atoms as ring members, R5 is selected from the group consisting of hydrogen, C1-C4-alkyl and a radical Ar1; R6 is selected from the group consisting of hydrogen and C1-C4-alkyl; Alk is C2-C4-alkandiyl; provided that R1 and R2 are not both phenyl, if R3 and R4 are both hydrogen.

Abstract: The present invention relates to compounds of the formula (I) where X is selected from the group consisting of a single bond, O, N—(C1-C4)-alkyl, N—Ar1, CR5R6, S, S(O) and SO2; Z1 and Z2 are independently selected from hydrogen, -Alk-OH, —CH2—Ar2—CH2—OH, -Alk?-C(O)ORx, —CH2—Ar2—C(O)ORx and —C(O)—Ar2—C(O)ORx, where Rx is selected from the group consisting of hydrogen, phenyl, benzyl and C1-C4-alkyl; R1 and R2 are independently selected from the group consisting of optionally substituted mono- or polycyclic aryl having from 6 to 26 carbon atoms as ring members and optionally substituted mono- or polycyclic hetaryl having a total of 5 to 26 atoms as ring members, R5 is selected from the group consisting of hydrogen, C1-C4-alkyl and a radical Ar1; R6 is selected from the group consisting of hydrogen and C1-C4-alkyl; Alk is C2-C4-alkandiyl; provided that R1 and R2 are not both phenyl, if R3 and R4 are both hydrogen.

Abstract: A control board includes a plate 7 for the control board including a first printed board for mounting a control section 56 and a first connecter 9; and a removable terminal stand plate 1 including a second printed board for mounting a terminal stand 3, input circuit section 4 and output circuit section 5, and a second connector. The first and second connectors are connected to each other.

Abstract: A power converting apparatus is comprised of an inverter unit arranged by a switching semiconductor element 51a for an upper arm and another switching semiconductor element 51d for a lower arm, and for turning ON/OFF the switching semiconductor elements to thereby convert DC power inputted from a DC power supply into AC power; and control means 10a for judging as to whether or not an abnormal operation is present based upon an output of a comparator 11a for judging as to whether or not a detection voltage detected by a voltage detecting circuit 61 is substantially equal to a voltage of the positive polarity; an output of a comparator 11b for judging as to whether or not a detection voltage detected by the voltage detecting circuit 61 is substantially equal to a voltage of the negative polarity; and an output signal of an igniting signal for ON/OFF-controlling the switching semiconductor elements, this voltage detecting circuit 61 detecting an output voltage of the inverter unit via a voltage dividing resistor